Sure, other Decepticons may scoff at his decision to go with a land-based alternate mode, but Knockout couldn't care less. He knows the value of looking good and isn't afraid to let others know it. It's not simply his own lines he's interested in; he has an appreciation for well-built mechanical body forms of all sizes and functions... and a nasty penchant for tearing them apart after he's done admiring them. Slick, sly and snobbish, he's the Decepticons' medic, though he professes both a preference and proficiency for dis-assembly. However, his medical skill has kept him in high demand; he's even performed vital and experimental surgeries on Megatron.
While not entirely a coward, Knockout also knows a good thing or two about self-preservation. When the going gets tough, Knockout gets going - the opposite direction. He has no qualms with abandoning ship if only to save his hide, even if it means betraying a comatose leader or deserting altogether. He doesn't get the most respect on the Nemesis, either. Show him some kindness, and hey, maybe he'll stick by your side.
Both in the operation room and on the battlefield, Knockout typically works with his brutish partner Breakdown. Knockout is the speedster of the duo, swiftly striking his victim's vulnerables with his Energon prod in debilitating sneak attacks while Breakdown goes the "massive smackdown" route with his raw power.
He is voiced by Daran Norris
He also secretly works for Ethan Lectric. But don't tell anyone!
Legends of the Multi-Universe (Menslady's Story)
Knockout was working for Galvatron...and trying to keep Breakdown under control. But toward the final battle, Knockout gave up and requested to join Team Prime. He wanted to be on the winning team, he said...and had finally realized that Galvatron would have no further use of him if victory went to evil. In addition, he realized how much of a pain both Galvatron and Breakdown were!
Sailor Neptune seems to have taken a liking to him, but could he gain that same interest in her? Only time will tell...
LOTM: The Angels Return
Knockout has been an Autobot for twelve years and is assisting Angewomon and Myotismon on their quest to find Optimus Prime's missing memories and heart. He enjoys calling himself their "Uncle Knockout". But Angewomon and Myotismon are not pleased by this.