Deathlok (also referred to as Deathlok the Demolisher) is the name of several fictional characters appearing in American comic books published by Marvel Comics. The first Deathlok, Luther Manning, appeared in Astonishing Tales #25 (Aug. 1974), created by Rich Buckler.[1] At least five subsequent Marvel characters have used the "Deathlok" identity since then: Michael Collins, Jack Truman, Rebecca Ryker, Henry Hayes, and Jemma Simmons. A recurring theme among these characters is that a dead human has been reanimated with cybernetic technology. "Deathlok technology" has also been used thematically by Marvel writers in other stories.
The character has also appeared on television in animation and live action, with J. August Richards and Bill Paxton respectively portraying the original variations Mike Peterson and John Garrett in the television series Agents of S.H.I.E.L.D.