Whizzer

Whizzer appeared prominently in Season 5 of Spider-Man: The Animated Series. Whizzer was one of the "Six Forgotten Warriors" who allied with Spider-Man and Silver Sable to battle the Red Skull and Electro.

Origin
As a child, Robert Frank was attacked and bitten by a cobra. Believed poisoned, his father injected him with mongoose blood believing it would serve as an antidote. The transfusion seemingly gave him superhuman speed (in actual fact it kick-started his latent mutant power) and as Robert grew into an adult he became the superhero known as Whizzer.

Power and Abilities
Whizzer is a mutant who can run at superhuman speeds. In his prime he could run at up to 100 mph and his reflexes were similarly enhanced.