Yellowjacket

Hank Pym aka Ant-Man/Giant Man, later known as Yellowjacket, is the scientist who discovered Pym Particles, from which he derives size altering powers. He is also a professor at Greyburn College and is highly interested in the study of insects. His student Janet Van Dyne also developed size-altering powers from Pym Particles and when Pym became Ant-Man, she became his partner the Wasp. He was not interested in fighting criminals as much as he is rehabilitating them, which is why he built the prison called the Big House.