Egghead

Egghead is an atomic scientist, and a recurring villain to Hank Pym. In his first appearance, he attempted to turn the ants against Hank Pym, but Pym was able to defeat him. Since then, he has fought Hank Pym, as well as his partner the Wasp many times over the years.

Egghead doesn't have any powers, but instead uses his intelligence, especially to create new gadgets to oppose his foes.