Owen Mercer's parents were Meloni Thawne and George "Digger" Harkness, also known as Captain Boomerang. Growing up, he never knew his father. Thanks to the Calculator, Digger managed to find his son and tried to get to know him. In truth, Owen actually admired his father as Captain Boomerang, and the two quickly bonded. While they were practicing throwing boomerangs, Digger learned that his son had superspeed. Harkness also revealed to Owen that the Golden Glider was not his Mother despite what the tabloids had said. With that, Harkness promised his son that he would make the two of them famous.
As Owen comes home one night, he finds that his father had a job to kill Jack Drake, the father of Tim Drake. When he learn that his father was killed during the job, he takes over the Captain Boomerang legacy to avenge is father.
Owen Mercer was created by Brad Meltzer and Rags Morales.
After his father's death, Owen decided to join his father old gang, The Rogues. Owen felt no real attachment to the Rouges and later, found himself part of The Secret Society of Super Villains. During a mission, Owen came across the Outsiders and was turned to the authorities when he later found himself part of the Suicide Squad. During his first mission with the Squad to capture Black Adam, he failed, and eventually found himself in prison.
During that time, Owen joined the Outsiders after the team broke Black Lightning out of jail for a crime he didn't commit. Owen was Black Lighting's cellmate during that time and tagged along. The reasons for joining the Outsiders was he longed to be part of a family after his father's death. While he was with the Outsiders, he was able to move past his feelings of anger towards Robin (Tim Drake) with one of his cases despite what happened between their fathers, although Tim was reluctant seeing Owen as a friend. Also during the Outsiders, he became friends with the newest member Supergirl (Kara Zol-El, who nicknamed him "Boomer". The two flirted with each other, and Supergirl did ask Owen on a "date" at one time, but the two never shared a romantic relationship due to Supergirl having a crush on Nightwing at the time, and only saw Owen as a brother. When Owen was injured by Cassandra Cain (who was brainwashed at the time), Supergirl checks up on him and apologizes for leading him on.
Major Story Arcs
As a member of the Rogues, Owen demands that they find his father's body and give it a proper burial. This leads the Rogues to James Jessie, who is working with the FBI, but every safe house they hit they seem to be two steps behind James and his crew.
Then one night, the Rogues are ambushed by James and his crew. Owen is ready o
Outsiders:Five of a Kind
When the Outsiders were being under new leadership due to Nightwing handing over the team to Batman, Batman decides to change the roster of the team. After an, "audition" between Nightwing and Owen, in which the pair go into space and battle Chemo spawn, Owen decides to quit and goes back to the Suicide Squad.
Owen later worked with the rest of the Suicide Squad to catch villains to send to planet Salvation during Salvation Run.
During Blackest Night, when Owen's Father, Digger Harkness was reanimated due to the Black Lantern Ring along with others, it lead to a fight between the current Rogues at Iron Heights. As the battle resulted into a draw, Owen arrives and takes his father away, thinking he could somehow resurrect his father. Putting Black Lantern Digger in a pit, Owen threw people in for Digger to feed on. Digger had convinced Owen that if he took the hearts from enough people he would come back to life. After dealing with the undead Rogues at Iron Heights, the live Rogues found Owen. Seeing that he had been killing women and children which was against the Rouges code, Captain Cold pushed him into the pit with his father. Digger took Owen's heart, and Owen became a Black Lantern. Captain Cold then froze both Captain Boomerang's and left them.
Powers and Skills
Owen was trained in the use of boomerangs by his father before his death. He also can create short bursts of superspeed, mostly when he throws his boomerangs, because of his mother being a Thawne, but he can't use superspeed for long periods of time like the Flashes.
- Boomerangs: Uses trick boomerangs identical to those used by the first Captain Boomerang.
- Electro-boomerang: Emit spark trails carrying a deadly 5,000 volts, which circle around the target.
- Exploso-boomerang: Detonates on contact, damage to all in one area.
- Gas boomerang: Monstrous intensity tear gas, affects one area.
- Razor boomerang
- Bladed boomerang
- Acid-spewing boomerang
- Sonic boomerang: Excellent intensity sonic attack.
- Gravity boomerang: Creates local gravity field of Incredible intensity.
- Weighted boomerangs: Solid-weighted boomerang.
- Preprogrammed boomerangs: These boomerangs are rocket propelled and are preprogrammed to fly to a target, pick up whatever item and returned to a predesignated spot with amazing flight speed and range.
Owen Mercer appears in Superman/Batman: Public Enemies as part of a villain group who attacks Superman and Batman.