Clay Martin Croker, generally credited as C. Martin Croker, was an American animator and voice actor. He was best known for having provided the voices of Dr. Weird and Steve on the animated series Aqua Teen Hunger Force, and Zorak and Moltar in Space Ghost Coast to Coast, replacing Don Messick and Ted Cassidy, who originally voiced the characters in the 1960s series Space Ghost. He was also an animator for both productions throughout their runs.

Aqua Teen Hunger Force, sometimes abbreviated as ATHF or Aqua Teen, is an American adult animated television series created by Dave Willis and Matt Maiellaro for Cartoon Network's late night programming block Adult Swim. It is about the surreal adventures and antics of three anthropomorphic fast food items: Master Shake, Frylock, and Meatwad, who live together as roommates and frequently interact with their human next-door neighbor, Carl Brutananadilewski.