The mutant head was a gimmick present on all of the Deluxe class and larger Beast Wars toys from 1996 and their later redecos and retools. A portion of these toys had two heads, one of which was a biological-looking "mutant" head and one of which was the actual robot head of the toy. Other toys utilizing this concept instead had masks which covered the robot face, or heads which could be rotated to show either face. Later Beast Wars toys did not use the mutant head gimmick, perhaps because it was not used in the television show due to budget constraints.