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Official Site: DC Comics

Knockout is a fictional character, a supervillainess in the DC Comics universe. She first appeared in Superboy vol. 2 #1 (February 1994), and was created by Karl Kesel and Tom Grummett.

Knockout is a former Female Fury from Apokolips. She first appeared shortly after Superboy moved to Hawaii. Using her superstrength, she fought and flirted with Superboy just for the fun of it. Her hidden identity was that of a super strong stripper who worked at a club called the BoomBoom Room. Later, she was recruited to join Amanda Waller's Suicide Squad for an attack against the international crime cartel Silicon Dragons. She joined Captain Boomerang, Deadshot, Sidearm and King Shark on the Suicide Squad. The Suicide Squad had to overcome betrayal and overwhelming enemies, and in the end, Knockout was supposedly killed when the Squad left her and King Shark in the exploding base. She later returned alive, and assisted Superboy in a battle against Valor, although she and Superboy did spar. She turned up shortly thereafter and teamed up with Superboy in several of his adventures. Soon, however, her past caught up with her. She was originally from Apokolips, a member of Granny Goodness's Female Furies. After Big Barda escaped with Mister Miracle, Knockout decided to leave the Furies as well. At one point when she was chained to a wall in the Fire Pits as punishment, she broke her chains and leapt into the fires. As she did so, a Boom Tube opened and took her to Hawaii.

The Female Furies arrived on Hawaii to reclaim Knockout. A battle broke out between Superboy, Knockout, and a small contingent of police officers and the Female Furies. One police officer died during the battle, but the Furies were driven off when Dubbilex used his mental abilities to convince them that Knockout had died in the battle as well. Dubbilex investigated the murder of the police officer, using his mental powers to scan the memories of most of the survivors . They soon realized that Knockout had killed the officer simply because he was in her way.

The police attempted to bring her in, but Superboy refused to believe she was guilty, forcing the two to briefly hide from the law. The two encountered an explorer named Victor Volcaneum, whom Knockout hoped Superboy would kill as a sign of deference to her. Superboy refused, and thus Knockout killed Volcanus instead. Upon seeing Knockout's true colors, Superboy managed to defeat her and bring her into custody.

Knockout has not been a contender in any CBUB matches.