The Thinker is the name of five supervillains appearing in American comic books published by DC Comics. The first incarnation, Clifford DeVoe, is an enemy of Jay Garrick. The second, Clifford Carmichael, is an enemy of Firestorm. The third, Desmond Carter, is an enemy of Batman. The fourth, an A.I. version of the Thinker, is an enemy of the Justice Society of America. An unidentified version of Thinker, introduced in The New 52, is an enemy of the Suicide Squad.