Jerry Randall

Galahad (formerly "Kid Galahad) is a superhero in the "Big Bang Comics" universe. He was formerly the sidekick to the superhero Knight Watchman, but struck out on his own after Knight Watchman retired.

Galahad's real name is Jerry Randall, and in his citizen identity, he is a lawyer working under the District Attorney of Midway City. The Knight Watchman, Reid Randall, was his uncle.

Big Bang Comics #10
In the story Galahad, Jerry tracks down the assassin Headhunter, the murderer of Reid, to New York City. He interrupts a man and woman in mid-coitus and begins attacking the man, who he believes is Headhunter, and tells the woman to lock herself safely in the bathroom. During the fight, the woman re-emerges, revealing herself to be Headhunter, and the man who Galahad had mistaken for the assassin is actually the Japanese crime boss Oroku Saki.

Image TMNT
Jerry Randall reappears in issue 9 of the Image run, under the guise of Knight Watchman.