Eric Williams is a character appearing in American comic books published by Marvel Comics. Created by Roy Thomas and John Buscema, the character first appeared in The Avengers #52 May (1968).[3] Eric Williams is the brother of the superhero Simon Williams / Wonder Man.[4] He is a supervillain and necromancer known under the codename Grim Reaper.[5] The character is an adversary of the Avengers.[6] He has also been a member of the Maggia, Lethal Legion, and Legion of the Unliving at various points in his history.[7] The character will be portrayed in live-action by Demetrius Grosse in the upcoming Disney+ series Wonder Man, set in the Marvel Cinematic Universe (MCU).