Roger Aubrey (Earth-9013)

Powers and Abilities
Superhuman Physiology: His whole body was enhanced by the serum he created, giving him a physical condition rivalling Captain America's.

Size-changing: He can shrink to a height of about 2 inches, while still retaining his strength. This lets him slip out of tight situations, and still be able to do damage.

Trivia

 * The formula that allows for his size-changing abilities is what later inspires Hank Pym to create the Ant-Man and Giant Man formulas.
 * He wanted to be called 'Dyna-Mite', and wear a less creepy costume, but the marketing department felt having a 'creepy, vampiric' hero would help to intimidate the Axis powers.