A hyper-intelligent telepathic ape, Gorilla Grodd has sought to rule both the simian and human worlds, though the Flash has frequently thwarted his plans.
They say big things come in small packages. So does trouble. Take the case of the diminutive psionic super-villain Doctor Psycho.
Wonder Woman’s longtime enemy Edgar Cizko began his criminal career as a man wrongfully imprisoned due to a frame-up by a romantic rival named Ben Bradley. The experience awakened in Cizko latent powers of illusion and hypnosis. He used his abilities to bend people (particularly women, whom he resented) to his will, and often fought the Amazon Princess.
One of the last survivors of the civil war that ravaged his home planet of Mars, J'onn J'onnz traveled to Earth and now fights to protect his adoptive home.