Al Pratt is a fictional character appearing in American comic books published by DC Comics. He is the first character to use the name Atom. He initially had no superpowers; instead, he was a diminutive college student and later a physicist, usually depicted as a "tough-guy" character. The character made his live-action debut in the television series Smallville, played by Glenn Hoffman. Henry Winkler cameoed as the character in the DC Extended Universe film Black Adam (2022).