Egghead is a fictional character created for the 1960s Batman television series. Played by Vincent Price, the character was identifiable by his pale bald head and white and yellow suit. He believes himself to be "the world's smartest criminal", and his crimes usually have an egg motif to them; he also includes egg-related puns in his speech and uses various egg-themed weapons. Additionally, Egghead used deductive reasoning to deduce Batman's secret identity.

Universo is a supervillain appearing in DC Comics, primarily as an enemy of the Legion of Super-Heroes. He was created by Jim Shooter and Curt Swan, and first appeared in Adventure Comics #349.