Hank Pym

Dr. Henry “Hank” Pym is quite possibly the smartest man in the world, though his battles with mental illness have kept him in the shadow of Tony Stark and Reed Richards. His discovery of the Pym Particle, which causes matter to grow or shrink tremendously, is chief among his many scientific achievements. Through many identities, including Ant-Man, Giant-Man, Yellowjacket, The Wasp, and Goliath, Pym has always used his genius to fight injustice, no matter the size.

Earth's Mightiest
Hank was defeated by Spider-Woman in the opening round