The Thinker (DC)

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. 
The character has been adapted from the comics into various forms of media, including television series and feature films. The Clifford DeVoe incarnation of the Thinker made his live-action debut in the television series The Flash, portrayed primarily by Neil Sandilands. In the DC Extended Universe, a variation of the unidentified Thinker called Dr. Gaius Grieves appears in The Suicide Squad (2021), portrayed by Peter Capaldi. 
==Incarnations== 
=== Clifford DeVoe ===
The New Earth version of Clifford eventually reformed and even became friends with Jay Garrick, becoming a member of the Suicide Squad and dedicating himself to helping others. However he eventually died of terminal cancer. Garrick, attempted to save him with the Thinking Cap, but DeVoe refused, preferring to rest in peace. His last words, to Garrick, were "Learn to lose every once in a while. A little humility prepares you for what lies ahead." 
He was created by Gardner Fox and Everett E. Hibbard 
=== Clifford Carmichael ===
 Thinker II, whose real name is Cliff Carmichael, is a supervillain featured in publications by DC Comics. He made his initial appearance as Cliff Carmichael in "Firestorm, the Nuclear Man" #1, released in March 1978, and later appeared as the Thinker in "Firestorm, the Nuclear Man" #99, published in July 1990. This character was created by Gerry Conway and Al Milgrom. 
He was a former classmate of Firestorm and became his enemy after finding the Thinking Cap and becoming the second Thinker. 
===Desmond Carter===
 
=== Des Carter, also known as the third Thinker III debuted in Batman: Shadow of the Bat #67, (October 1997). The character was created by Alan Grant and Norm Breyfogle. ===
===A.I.===
An named artificial intelligence is the fourth incarnation of the thinker. His first appearance occurred in JSA #9 (April 2000) and was created by David S. Goyer, Geoff Johns, and Stephen Sadowski. 
=== New 52 Version===
The unidentified Thinker, recognized as the fifth iteration, first appeared in Suicide Squad (vol. 4) #24, published in December 2013, as part of the DC Rebirth storyline. This character was created by Matt Kindt and Patrick Zircher and is distinguished as a human cyborg, setting him apart from his predecessors. 
He is an enemy of the Suicide Squad. 
==In other media==
===Arrowverse===
 
===DC Extended universe===
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