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{{short description|DC Comics supervillain}}
{{Infobox comics character
|character_name=Captain Boomerang
|image=Captain Boomerang (George "Digger" Harkness).png
|caption=George "Digger" Harkness as Captain Boomerang, as depicted in ''The Flash'' #148 (November 1964).<br>Art by [[Carmine Infantino]] (pencils) and Murphy Anderson (inks).
|real_name=George "Digger" Harkness (Captain Boomerang I)<br>Owen Mercer (Captain Boomerang II)
|publisher=[[DC Comics]]
|debut=''[[The Flash (comic book)|The Flash]]'' #117 (December 1960)
|creators='''George''' "'''Digger'''" '''Harkness''':<br>[[John Broome (writer)|John Broome]]<br>[[Carmine Infantino]]<hr>'''Owen Mercer''':<br>[[Brad Meltzer]]<br>[[Michael Turner (comics)|Michael Turner]]
|species=[[Human]]
|alliances=[[Suicide Squad]]<br/>[[Justice League]]<br>[[Secret Society of Super Villains]]<br/>[[Rogues (comics)|Rogues]]
|aliases=[[Mirror Master]] II
|powers=
* Expert marksman
* Expert combatant
* Utilizes various trick and weaponized boomerangs 
}}
'''Captain Boomerang''' is the name of two <!--Do not add "fictional" as it is tautological; supervillains (and characters in general) are by definition implied to be fictionalized to some extent.-->[[supervillain]]s appearing in [[American comic books]] published by [[DC Comics]], who respectively serve as enemies to both the [[Flash (Barry Allen)|Barry Allen]] and [[Wally West]] versions of the [[Flash (DC Comics character)|Flash]].<ref>{{cite book |last =Rovin |first =Jeff |title =The Encyclopedia of Supervillains |publisher =Facts on File |date =1987 |location =New York |isbn = 0-8160-1356-X |pages=48–49}}</ref> Created by writer [[John Broome (writer)|John Broome]] and artist [[Carmine Infantino]], the first Captain Boomerang, '''George''' "'''Digger'''" '''Harkness''', first appeared in ''[[The Flash (comic book)|The Flash]]'' #117 (December 1960). He has also been a prominent member of the [[Suicide Squad]] since its second iteration in the late 1980s. During the 2004 storyline ''[[Identity Crisis (DC Comics)|Identity Crisis]]'', George Harkness is killed and his son, '''Owen Mercer''', created by [[Brad Meltzer]] and [[Michael Turner (comics)|Michael Turner]], takes over his father's role as Captain Boomerang for a period of time. However, during the 2009–2010 ''[[Blackest Night]]'' storyline, Owen is killed and Harkness returns to life, resuming his role as Captain Boomerang, and, overwhelmed by grief and rage, evolves as a dangerous threat after the loss of his son.

Both Harkness and Mercer have been adapted from the comics into various forms of media, including television series, feature films, and video games. In particular, Harkness appeared in the [[Arrowverse]] television series ''[[Arrow (TV series)|Arrow]]'', portrayed by [[Nick E. Tarabay]], and the [[DC Extended Universe]] films ''[[Suicide Squad (2016 film)|Suicide Squad]]'' (2016) and ''[[The Suicide Squad (film)|The Suicide Squad]]'' (2021), portrayed by [[Jai Courtney]]. Additionally, Mercer appears in the Arrowverse series ''[[The Flash (2014 TV series)|The Flash]]'', portrayed by [[Richard Harmon]].

==Publication history==
George "Digger" Harkness appeared in ''The Flash'' #117 (December 1960) and was created by writer [[John Broome (writer)|John Broome]] and artist [[Carmine Infantino]].<ref name=Guide>{{cite book |last1=Cowsill |first1=Alan |last2=Irvine |first2=Alex |last3=Korte |first3=Steve |last4=Manning |first4=Matt |last5=Wiacek |first5=Win |last6=Wilson |first6=Sven |title=The DC Comics Encyclopedia: The Definitive Guide to the Characters of the DC Universe |date=2016 |publisher=DK Publishing |isbn=978-1-4654-5357-0 |page=60}}</ref> Throughout the first several years of the character's existence, Captain Boomerang spoke with an American accent. Beginning in the late 1980s, he developed an Australian accent.

Owen Mercer first appeared in ''Identity Crisis'' #2 (2004), and was created by [[Brad Meltzer]] and [[Rags Morales]].

==Fictional character biographies==
===George "Digger" Harkness===
[[File:The Flash, vol. 1, no. 117.jpg|upright|thumb|George "Digger" Harkness's debut as Captain Boomerang on the cover of ''Flash'' #117 (Dec. 1960)|left|249x249px]]
Secretly the illegitimate son of an American soldier and an Australian woman, Harkness was raised in an Australian town called Korumburra in poverty, during which time he developed great skill in making [[boomerang]]s, and in using them as weapons. As a young adult, he was hired as a performer and boomerang promoter by a toy company which was, unbeknownst to him, owned by his biological father. It was at this time that he developed the Captain Boomerang persona that he would continue to use in his later criminal career.<ref>{{cite book |last1=Greenberger |first1=Robert |title=The Essential Batman Encyclopedia |date=2008 |publisher=Del Rey |isbn=9780345501066 |page=77}}</ref>  Audiences ridiculed him, and a resentful Harkness turned to using his boomerangs for crime.

When he began committing crimes, he threw suspicion off himself by briefly pretending another man was impersonating him, showing his 'parents', (really other crooks) to the Flash after the Flash caught him next to a crime scene. He nearly succeeded in killing the Flash after knocking him out with a boomerang, then tying him to a giant boomerang that he fired, which then got sent into space and then fell into the ocean. However, the Flash escapes from his friction-proof bonds by quickly vibrating his molecules. He also increased the boomerang's velocity so much he was able to use it to defeat and jail Harkness and the two crooks.

Boomerang becomes a recurring enemy of the [[Flash (Barry Allen)|Flash]] and joins the [[Rogues (comics)|Rogues]], a group of villains dedicated to opposing Flash.<ref name="dc-ency">{{Citation|last = Greenberger|first = Robert|author-link = Robert Greenberger|contribution = Captain Boomerang|editor-last = Dougall|editor-first = Alastair|title = The DC Comics Encyclopedia|page = 66|publisher = [[Dorling Kindersley]]|place = New York|year = 2008|isbn = 978-0-7566-4119-1|oclc = 213309017}}</ref> Later on, Harkness joins the [[Suicide Squad]] in exchange for a pardon.<ref name="dc-ency" /> However, his grating personality and blatant racism cause considerable friction among his teammates, and he is considered to be a dangerous, vicious, cowardly and undependable member.

[[File:Captain Boomerang (THE FLASH 7).jpg|upright|thumb|George "Digger" Harkness as Captain Boomerang on the cover of ''The Flash'' (vol. 3) #7 (Jan. 2011), art by Francis Manapul]]In ''[[Identity Crisis (DC Comics)|Identity Crisis]]'', Captain Boomerang is sent to kill [[Jack Drake]], who kills him before dying.<ref>''Identity Crisis'' #5 (December 2004)</ref> In ''[[Blackest Night]]'' and ''[[Brightest Day]]'', Boomerang returns as a [[Black Lantern]] before the [[Life Entity]] fully resurrects him.<ref>{{multiref2|''Blackest Night: Batman'' #3 (December 2009)|''Blackest Night: The Flash'' #1 - 3 (December 2009 - February 2010)|''Blackest Night'' #8 (March 2010)|''Brightest Day'' #0 (April 2010)|''Red Robin'' #15 - 16 (August - September 2010)|''The Flash'' (vol. 3) #2 - 7 (May - December 2010)|''Brightest Day'' #7 (August 2010)|''Brightest Day'' #18 (January 2011)|''Brightest Day'' #23 (April 2011)|''Red Robin'' #26 (August 2011)
}}</ref>

[[File:Captain Boomerang Suicide Squad Vol 5 6.png|thumb|upright|left|Captain Boomerang during The New 52. Art by [[Lee Bermejo]].]]
In ''[[The New 52]]'' continuity reboot, Captain Boomerang returns to the Suicide Squad.<ref>''Suicide Squad'' (vol. 4) #27 (March 2014)</ref><ref>''Suicide Squad'' (vol. 4) #3 (January 2012)</ref><ref>''Suicide Squad'' (vol. 4) #4 (February 2012)</ref> In ''[[Doomsday Clock (comics)|Doomsday Clock]]'', he is among the villains who meet with the [[Riddler]] to discuss the Superman Theory.<ref>''Doomsday Clock'' #6 (July 2018). DC Comics.</ref>

===Owen Mercer===
{{Infobox comics character <!--Wikipedia:WikiProject Comics-->
|image=Boomerang mercer.jpg
|caption=Captain Boomerang (Owen Mercer),<br>panel from ''Identity Crisis'' #6 (January 2005), art by [[Rags Morales]]
|character_name=Captain Boomerang
|alter_ego=Owen Mercer
|species=Metahuman
|publisher=[[DC Comics]]
|debut=''[[Identity Crisis (DC Comics)|Identity Crisis]]'' #3<br>(October 2004)
|creators=[[Brad Meltzer]]<br>[[Rags Morales]]
|alliances=[[Rogues (comics)|Rogues]]<br/>[[Secret Society of Super Villains#3rd Formation|The Society]]<br/>[[Outsiders (comics)|Outsiders]]<br/>[[Suicide Squad]]<br/>[[Black Lantern Corps]]
|aliases= Owen Harkness, Captain Boomerang Jr., Silver Boomerang
|powers=Utilizes various trick and weaponized boomerangs<br>Limited superhuman speed called "speed bursts"
}}
At the beginning of the 2004 ''[[Identity Crisis (DC Comics)|Identity Crisis]]'' storyline, "Digger" Harkness a.k.a. Captain Boomerang found himself an obsolete villain in the modern world of supervillains. Regularly going up to the supervillain satellite looking for jobs, asking favors from the [[Calculator (comics)|Calculator]], he was at the end of his rope looking for a job to put him on the map again.

During this time he felt it was finally time to reach out to the son he never raised, '''Owen Mercer'''. Before Harkness's death, the two bonded. Taking up his father's legacy, he became the second Captain Boomerang. [[Captain Cold]], brother to [[Golden Glider]] (who was believed to be Owen's mother), took Owen in as one of the [[Rogues (comics)|Rogues]].<ref>{{cite book |last1=Greenberger |first1=Robert |title=The Essential Batman Encyclopedia |date=2008 |publisher=Del Rey |isbn=9780345501066 |pages=77–78}}</ref>

Though Owen initially had no real attachment to the Rogues (and even voiced various, albeit short, opinions out loud), he grew to enjoy the purpose and sense of family the team offered after finding that his father's body had been stolen for use in a lab (which was later revealed to be part of a plan to get memories from Harkness).

Around this time the ''Rogue War'' storyline began, in which the "reformed" Rogues fought the Rogues under Captain Cold. Ashley Zolomon is told by Harkness himself (he is briefly revived by the "reformed" Rogues as part of an experiment) that Golden Glider is not Owen's real mother. Later, it is revealed in ''Flash'' #225 (January 2006) that Meloni Thawne is the mother of Owen Harkness, formerly Owen Mercer, the new Captain Boomerang, having conceived him by the original Boomerang while he was trapped in the 30th Century. It is unknown whether she gave birth to Bart Allen or Owen first, or how Owen made it back to our own time.

During the 2005–2006 ''[[Infinite Crisis]]'' storyline, Owen was part of [[Alexander Luthor Jr.]]'s [[Secret Society of Super Villains#3rd Formation|group of villains]]. He, Captain Cold, and [[Mirror Master]] were sent to guard a factory against the [[Outsiders (comics)|Outsiders]], under the command of [[Deathstroke]] (who was actually [[Roy Harper (comics)|Arsenal]] in disguise). When the ensuing battle between Outsiders and Rogues destroyed the machinery in the factory, the Rogues and other villains would not help in the fight at all and then at the explosion, he is saved by the Outsiders, while the Rogues left them at the base to blow up. He is then turned over to the authorities off-panel.

During the ''[[52 (comics)|52]]'' series, Owen is part of a [[Suicide Squad]] sent by [[Amanda Waller]] to attack [[Black Adam]].

In the 2006 ''[[One Year Later]]'' storyline, Owen finds himself placed in the metahuman prison known as [[Iron Heights]]. There he finds himself being the cellmate of [[Black Lightning]], who was arrested for a murder that Deathstroke the Terminator committed.<ref name="dc-ency"/> It is soon discovered that the other inmates have learned of Black Lightning's identity and are planning to murder him. The Outsiders become aware of this and attempt to break Pierce out of jail. Unfortunately it goes terribly wrong. As they escape, Black Lightning asks that they take Owen with them, which they grudgingly agree. As they escape, the Outsiders' jet, the ''Pequod'', is shot down, and while the team escapes, the world believes them dead.

Because of this event and the Freedom of Power Treaty, the team now works covertly. Most of the current Outsiders were believed dead until a botched mission revealed their presence to the world. His history as a Rogue has been exploited several times by team leader [[Dick Grayson|Nightwing]] from torturing dictators to taking down a cloned [[Flash (Jay Garrick)|Jay Garrick]]. However, it is revealed that his desire to join the Outsiders comes from his desire for a family. Nightwing allowed him to join his team partially because Arsenal felt he would be worthy, and because Owen has been striving to find a family since the death of his father and the outbreak of the Rogue War.

Owen searched out the current [[Tim Drake|Robin]] because of their connection, where their fathers killed one another. While Robin originally believed Owen was searching for him to finish the fight his father started, in ''Robin'' #152, Owen revealed that he wished to make amends with the younger hero, and has offered his assistance to help Robin destroy a bomb created by the [[Joker (character)|Joker]]. The two later spend the following night spreading out old hideouts of several villains. Afterward, Robin gained a bit of civil respect for Boomerang despite what their fathers did to one another. Boomerang attempted to shake hands with Robin, but Robin refused the gesture feeling unready to make that step.

At some point during his tenure with the Outsiders, Captain Cold approached the mercenary [[Deathstroke]] with an offer concerning Owen. In exchange for kidnapping Deathstroke's daughter [[Rose Wilson|Rose]] (who had betrayed her father and joined the [[Teen Titans]]) and delivering her to her father, Deathstroke would track down the Outsiders and turn Owen over to the Rogues. The villains planned to force Owen to cooperate with the team by administering the same mind-controlling agent that Deathstroke had used on his daughter as well as Batman's partner [[Cassandra Cain]]. However, this plan fell apart when Rose escaped and helped the Teen Titans defeat the Rogues, which led to Deathstroke backing out of the deal.<ref>''Teen Titans: Cold Case'' (February 2011)</ref>

Owen has also developed a close friendship with Supergirl, [[Supergirl (Kara Zor-El)|Kara Zor-El]].<ref name="dc-ency"/> After Supergirl returned from her time away with Power Girl, Kara began looking to start a normal life on Earth and went out a 'date' with Owen, during which they spoke of their past problems. Kara has nicknamed Owen 'Boomer'. Although the pair often flirts with one another, they have never progressed to a romantic relationship. This comes primarily from the fact that Kara continues to show interest in Nightwing, and jokingly says that what she and Owen has is more of a brother-sister relationship, in which he has an unhealthy fixation on his 'little sis'.

Feeling rejected after Kara's relationship with Power Boy, Owen goes to a bar where he meets [[Cassandra Cain]] (Batgirl), who at the time was being mind-controlled by Deathstroke the Terminator, and who had been hired to kill Supergirl. Cassandra kidnaps and tortures Owen to lure Supergirl. Unfortunately, this proves unnecessary, as Kara had tracked down Cassandra on her own, without any knowledge of Owen's kidnapping. Batgirl nearly manages to defeat Supergirl, but is defeated when Kara grows Krypton Sunstones which impale her foe. Kara then rushes Owen to the hospital where he is treated. While still in medical care, it is discovered that Power Boy has been stalking Kara.

Following Kara's rather violent break-up with Power Boy, the Earth was overtaken by spirits from the Phantom Zone, which began to emerge from within Superman. Kara managed to defeat the Phantoms and return the Earth to normal. Afterwards, in ''Supergirl'' #19 Kara begins to make amends with all the people who she has hurt since arriving on earth. Amongst them, Boomer, to whom she apologises for letting him get hurt and leading him on. During this conversation, the matter of Owen's relationship with Kara is finally clarified. When asked by Kara how he feels about her leading him on, Owen replies, "Well, if I may ... for me to have been 'led on' would presume I thought I had a shot with you ... For me to think I had a shot with a sixteen-year-old girl -- crystal-powered hypersleep whatever junk aside ... that would mean I am a dirtbag with a thing for jailbait. Which I am not".

In ''[[Checkmate (comics)|Checkmate]]'' #13-15, crossover with ''Outsiders'' #47-49, Checkmate abducts all members of the Outsiders except [[Dick Grayson|Nightwing]], allowing him to infiltrate their headquarters to offer them a deal: The Outsiders will not be shut down over their actions in Africa in exchange for infiltrating Oolong Island on behalf of Checkmate. During the operation, Nightwing, Owen, and Checkmate's [[Sasha Bordeaux|Black Queen]] are taken captive by [[Chang Tzu]], and the latter two are tortured and experimented on. After [[Batman]] rescues the Outsiders over [[North Korea]]n territory, and Nightwing hands over the team to him, Owen and Nightwing are paired with each other in "auditions" for the new lineup. Pushed too far, feeling he does not need to prove himself anymore, Owen returns to the Suicide Squad although Batman feels he could make a good double agent.<ref name="dc-ency"/>

In ''All Flash'' #1, Owen as part of the new Suicide Squad captures two of the Rogues that are responsible for Bart Allen's murder, [[Heat Wave (comics)|Heat Wave]] and [[Weather Wizard]], in Louisiana. In ''Countdown'' #39, he and the rest of the Squad chase after [[Pied Piper (DC Comics)|Piper]] and [[Trickster (comics)|Trickster]] in [[Gotham City]] after they had escaped capture from Squad member [[Deadshot]]. The Squad however is just as unsuccessful as Deadshot, and the two Rogues escape capture.<ref>''All Flash'' #1. DC Comics.</ref>

Owen visits his father's grave along with [[Tar Pit (comics)|Tar Pit]], when the swarm of [[Power ring (DC Comics)#Black|black rings]] fly into the crypt and reanimate all the deceased villains as [[Black Lantern Corps|Black Lanterns]], including his father.<ref name="bntf1">''Blackest Night: The Flash'' #1 (December 2009)</ref> The Rogues battle in the [[Iron Heights Penitentiary|Iron Heights]], when the battle resulted in a [[Tie (draw)|draw]] on both sides, Owen arrives and abducts Digger from the battle, believing he can bring his father back.<ref name="bntf2">''Blackest Night: The Flash'' #2 (January 2010)</ref> Later on, Owen has apparently chained up his father's body and is feeding him victims such as a villain named Sandblast who was relying on Owen to get him into the Rogues. It is revealed that Owen has been deceived by Boomerang into believing the blood of enough victims can bring him back to life. The Rogues track Owen down with Captain Cold berating him for believing Harkness' lies. Realizing that Owen has broken the Rogues' code of honor by killing women and children, Cold shoves him into the pit. Owen has his heart ripped out by his father, with a ring flying in to revive him as a Black Lantern. The Black Lantern Owen and his father are then encased in ice by Cold.<ref name="bntf3">''Blackest Night: The Flash'' #3 (February 2010)</ref> His father manages to escape and join in the mass battle against the heroes where he is brought back to life and full health.<ref name="bn8">''Blackest Night'' #8 (March 2010)</ref>

==Powers and abilities==
Captain Boomerang carries a number of boomerangs in his satchel. He is an expert at throwing the weapons and as well as ordinary boomerangs he has a number with special properties, including bladed, explosive, incendiary, and electrified boomerangs. Upon his resurrection, Digger finds he has the ability to create boomerangs out of energy that explode on contact.<ref name="tf3">''The Flash'' (vol. 3) #3 (June 2010)</ref> However, this new ability is lost when he completes the task given by the White Lantern Entity.<ref name="rr26">''Red Robin'' #26 (August 2011)</ref>

The original Captain Boomerang then began to train his son Owen Mercer before he died. He has exhibited creativity in his boomerangs by creating "razorangs" and an acid-spewing boomerang. Owen has also exhibited "speed bursts", short bursts of limited super speed over short distances, most notably when throwing boomerangs. These were even possible during the time period that Bart Allen fully contained the [[Speed Force]], usually displayed as his ability to throw boomerangs at high velocities, rather than running.<ref>''Outsiders'' (vol. 3) #36 (July 2006). DC Comics.</ref> However, during [[Chang Tzu]]'s experiments, he claimed he believed Mercer could access the Speed Force, and Mercer denied having super speed at all anymore, but Chang Tzu was able to activate Owen's speed involuntarily, causing him great pain.<ref>''Checkmate'' (vol. 2) #15 (August 2007). DC Comics.</ref> The exact source of this power remains unrevealed. Regardless, as of ''Justice Society of America'' #8, the Speed Force appears to have returned and is accessible to all former speedsters once more.

==Other versions==
* An alternate universe variant of Captain Boomerang called '''Adam Clay''' appears in the [[Tangent Comics]] one-shot ''[[Green Lantern]]''. This version is a disenfranchised pilot whose family was killed by a Japanese army. Clay escapes in his family's crop duster and forms a group of pilots under the nickname "Captain Boomerang" for his family's Australian origins and the [[CAC Boomerang]] plane.
* An older, alternate universe variant of Digger Harkness appears in ''[[Kingdom Come (comics)|Kingdom Come]]''.<ref>''Kingdom Come'' #2 (June 1996). DC Comics.</ref>

==In other media==
===Television===
* The George "Digger" Harkness incarnation of Captain Boomerang appears in ''[[Justice League Unlimited]]'', voiced by [[Donal Gibson]].<ref name="btva">{{Cite web |title=Captain Boomerang Voices (Flash) |url=https://www.behindthevoiceactors.com/characters/Flash/Captain-Boomerang/ |access-date=March 19, 2019 |website=Behind The Voice Actors |language=en-US |postscript=. A green check mark indicates that a role has been confirmed using a screenshot (or collage of screenshots) of a title's list of voice actors and their respective characters found in its credits or other reliable sources of information.}}</ref> This version is a member of [[Suicide Squad|Task Force X]] and the [[Rogues (comics)|Rogues]].
* The George "Digger" Harkness incarnation of Captain Boomerang appears in ''[[Batman: The Brave and the Bold]]'', voiced by [[John DiMaggio]].<ref name="btva"/>
* The George "Digger" Harkness incarnation of Captain Boomerang appears in ''[[Arrow (TV series)|Arrow]]'', portrayed by [[Nick E. Tarabay]].<ref>{{cite web|last=Hibberd |first=James |url=http://insidetv.ew.com/2014/09/16/arrow-spartacus-captain-boomerang/?hootPostID=6b2ec8f8bb8ec3865e7ca65eeef99632 |title='Arrow' casts 'Spartacus' actor as Captain Boomerang &#124; EW.com |publisher=Insidetv.ew.com |date=2014-09-16 |access-date=2016-08-06}}</ref> This version is a former [[Australian Secret Intelligence Service|ASIS]] agent and member of [[A.R.G.U.S.]]'s Suicide Squad. While working for the latter, his commanding officer [[Lyla Michaels (Arrowverse)|Lyla Michaels]] was ordered to scrub a failed mission and "sanitize" the active Squad members via implanted nano-bombs. However, Harkness' bomb failed to detonate, leading to him seeking revenge against her. In the episodes "Draw Back Your Bow" and "[[The Brave and the Bold (Arrow)|The Brave and the Bold]]", he resurfaces in the present to kill Michaels, only to be foiled by [[Oliver Queen (Arrowverse)|Oliver Queen]], the [[Barry Allen (Arrowverse)|Flash]], and their respective teams. Following this, Harkness is imprisoned in an A.R.G.U.S. prison on the island Lian Yu. In the episode "[[Lian Yu (Arrow)|Lian Yu]]", Oliver recruits Harkness to battle [[Adrian Chase (Arrowverse)|Prometheus]]. While Harkness betrays Oliver to join Prometheus, [[Malcolm Merlyn (Arrowverse)|Malcolm Merlyn]] sacrifices himself to save Oliver by killing Harkness with a landmine.
* The Owen Mercer incarnation of Captain Boomerang appears in the [[The Flash season 9|ninth season]] of ''[[The Flash (2014 TV series)|The Flash]]'' (2014), portrayed by [[Richard Harmon]].<ref>{{cite web |last1=Petski |first1=Denise |title='The Flash': Richard Harmon Joins CW Series As A New Captain Boomerang |url=https://deadline.com/2022/09/the-flash-richard-harmon-cw-series-captain-boomerang-1235124074/ |website=[[Deadline Hollywood]] |access-date=September 22, 2022 |date=September 21, 2022}}</ref> This version is a member of the [[Red Death (DC Comics)|Red Death]]'s Rogues who possesses the additional ability to teleport and wields boomerangs constructed from [[Wayne Enterprises]] technology.
* The George "Digger" Harkness incarnation of Captain Boomerang appears in the ''[[Young Justice (TV series)|Young Justice]]'' episode "Leverage", voiced by [[Crispin Freeman]].<ref name="btva" /> This version is a member of Task Force X.
* An unidentified Captain Boomerang appears in ''[[Harley Quinn (TV series)|Harley Quinn]]'', voiced by [[Josh Helman]]. This version is a member of the Suicide Squad's "A-Team".

===Film===
* The Owen Mercer incarnation of Captain Boomerang makes a non-speaking cameo appearance in ''[[Superman/Batman: Public Enemies]]''.
* The George "Digger" Harkness incarnation of Captain Boomerang makes a minor non-speaking appearance in ''[[Lego Batman: The Movie - DC Super Heroes Unite]]''.
* The George "Digger" Harkness incarnation of Captain Boomerang appears in films set in the [[DC Animated Movie Universe]] (DCAMU):
** Harkness first appears in ''[[Justice League: The Flashpoint Paradox]]'', voiced by [[James Patrick Stuart]]. This version is a member of the [[Rogues (comics)|Rogues]]. Additionally, an alternate universe variant from the ''[[Flashpoint (comics)|Flashpoint]]'' timeline makes a cameo appearance.
** Harkness appears in ''[[Suicide Squad: Hell to Pay]]'', voiced by [[Liam McIntyre]].<ref name="btva" /> After being recruited into Amanda Waller's Suicide Squad, he forms a rivalry with [[Deadshot]].
** Harkness appears in ''[[Justice League Dark: Apokolips War]]'', voiced by McIntyre.<ref name="btva" /> Having survived [[Darkseid]]'s assault on Earth two years prior, he and the Suicide Squad assist Superman and [[Lois Lane]] in reaching a [[LexCorp]] building in an attempt to destroy [[Apokolips]] and defeat Darkseid before the group sacrifice themselves to stop Darkseid's [[Parademon|Para]][[Doomsday (DC Comics)|dooms]].
* The George "Digger" Harkness incarnation of Captain Boomerang appears in ''[[Batman: Assault on Arkham]]'', voiced by [[Greg Ellis (actor)|Greg Ellis]].<ref name="btva"/> This version is a veteran Suicide Squad member who competes with Deadshot over leadership.
* The [[George Harkness (DC Extended Universe)|George "Digger" Harkness]] incarnation of Captain Boomerang appears in films set in the [[DC Extended Universe]] (DCEU), portrayed by [[Jai Courtney]].<ref>{{cite web|first=Justin|last=Kroll|title='Suicide Squad' Cast Revealed: Jared Leto to Play the Joker, Will Smith is Deadshot|url=https://variety.com/2014/film/news/suicide-squad-cast-revealed-jared-leto-to-play-the-joker-will-smith-is-deadshot-1201368867/|magazine=[[Variety (magazine)|Variety]]|date=December 2, 2014|access-date=July 12, 2015}}</ref><ref>{{cite web|url=http://wegotthiscovered.com/movies/jai-courtney-wants-suicide-squad-2-says-hes-not-done-boomerang/|title=Jai Courtney On Suicide Squad 2: I Don't Feel Like I'm Done With Boomerang|publisher=We Got This Covered|last=Wilding|first=Josh|date=December 1, 2016}}</ref> This version is a member of the Suicide Squad before being killed in battle on [[Corto Maltese (DC Comics)|Corto Maltese]].<ref>{{cite news |last1=Truitt |first1=Brian |date=August 7, 2021 |title='The Suicide Squad' spoilers! How that surprise end-credits scene sets up John Cena's spinoff show |work=[[USA Today]] |url=https://www.usatoday.com/story/entertainment/movies/2021/08/07/suicide-squad-end-credits-scene-peacemaker-john-cena-spinoff/5499998001/ |access-date=August 10, 2021}}</ref><ref>{{cite news |last1=Ortiz |first1=Andi |date=August 6, 2021 |title=All the Major Deaths in 'The Suicide Squad' Ranked |work=[[TheWrap]] |url=https://www.thewrap.com/the-suicide-squad-major-deaths-ranked/ |access-date=August 10, 2021}}</ref>
* The George "Digger" Harkness incarnation of Captain Boomerang makes a cameo appearance in ''[[The Lego Batman Movie]]''.
* The George "Digger" Harkness incarnation of Captain Boomerang appears in ''[[Lego DC Comics Super Heroes: The Flash]]'', voiced by [[Dee Bradley Baker]].<ref name="btva" />
* The George "Digger" Harkness incarnation of Captain Boomerang makes a cameo appearance in ''[[Injustice (2021 film)|Injustice]]''.<ref name="btva" />

===Video games===
* Both George "Digger" Harkness and Owen Mercer appear in ''[[DC Universe Online]]'', voiced by Shanon Weaver.<ref name="btva"/> The latter serves as a tech dealer in the Hall of Doom.
* The George "Digger" Harkness incarnation of Captain Boomerang appears as a playable character in ''[[Suicide Squad: Kill the Justice League]]'',<ref>{{cite web|last=Durnbush|first=Jonathon|date=August 23, 2020|title=Suicide Squad: Kill the Justice League Set in Batman: Arkham Universe|url=https://www.ign.com/articles/suicide-squad-kill-the-justice-league-in-batman-arkham-universe|access-date=August 23, 2020|work=[[IGN]]}}</ref> voiced by [[Daniel Lapaine]].

====Lego====
* The George "Digger" Harkness incarnation of Captain Boomerang appears as an unlockable playable character in ''[[Lego Batman 2: DC Super Heroes]]'', voiced by [[Nolan North]].
* The George "Digger" Harkness incarnation of Captain Boomerang appears as a playable character in ''[[Lego Batman 3: Beyond Gotham]]'' via "The Squad" [[Downloadable content|DLC]].
* The George "Digger" Harkness incarnation of Captain Boomerang appears as an unlockable playable character in ''[[Lego DC Super-Villains]]'', voiced by [[Gideon Emery]].<ref>{{Cite web|url=https://www.youtube.com/watch?v=3WQ5Zsl2t1c|title=LEGO DC Super Villains - Arthur Parsons interview with IGN San Diego Comic Con 2018 (New Gameplay!)|date=19 July 2018 |access-date=5 November 2021|publisher=[[YouTube]]}}</ref>

===Miscellaneous===
* An unidentified Captain Boomerang makes a cameo appearance in the ''[[Injustice: Gods Among Us (comics)|Injustice: Gods Among Us]]'' prequel comic.
* The George "Digger" Harkness incarnation of Captain Boomerang appears in ''[[The Flash: Season Zero]]'' as a member of A.R.G.U.S.'s Suicide Squad.
* The George "Digger" Harkness incarnation of Captain Boomerang makes a cameo appearance in a flashback in the ''Arrow'' tie-in novel, ''Arrow: Vengeance'', in which he trained with [[Slade Wilson (Arrowverse)|Slade Wilson]] during his time in the ASIS.
* The George "Digger" Harkness incarnation of Captain Boomerang appears in the ''[[Batman: Arkham Knight]]'' prequel comic as a member of [[Harley Quinn]]'s Suicide Squad before he is hired by [[Amanda Waller]] to join Deadshot in assassinating [[Bruce Wayne]]. However, Digger is betrayed and killed by Deadshot.
* An unidentified Captain Boomerang appears in the ''[[Injustice 2 (comics)|Injustice 2]]'' prequel comic as a member of [[Ra's al Ghul]]'s Suicide Squad.<ref>''[[Injustice 2]]'' #1. DC Comics.</ref>

===Merchandise===
* An unidentified Captain Boomerang received a figure in wave 18 of the [[DC Universe Classics]] line.<ref>{{cite web|author=Re, Yo Go|url=http://www.oafe.net/yo/dcuc18_cb.php|title=Captain Boomerang: DC Universe|publisher=Online Action Figure Entertainment|date=October 5, 2011}}</ref>
* An unidentified Captain Boomerang received a figure in the ''Justice League Unlimited'' tie-in toy line.
* The Owen Mercer incarnation of Captain Boomerang received a figure in Mattel's "DC Infinite Crisis" line.

==See also==
* [[Boomerang (character)]] – a similar villain in [[Marvel Comics]]

==References==

{{Reflist}}

==External links==
* {{wikia|dc|Captain Boomerang}}
* {{wikia|arrow|Arrowverse Wiki|Digger_Harkness|Captain Boomerang}}

{{Flash}}
{{Suicide Squad}}
{{The Outsiders}}

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