Ragnarok is a supervillain appearing in American comic books published by Marvel Comics. A cyborg clone of the hero Thor, Ragnarok has a similar appearance and abilities but uses them in opposition to the established heroes.
Ragnarok from the cover of Civil War #4 (September 2006). Art by Michael Turner.
Thor Odinson is a superhero appearing in American comic books published by Marvel Comics. Created by artist Jack Kirby, writer Stan Lee, and scripter Larry Lieber, the character first appeared in Journey into Mystery #83 (1962) and first received his own title with Thor #126 (1966). Thor is an adaptation of the deity of the same name from Norse mythology, and many aspects of Thor's character are based on Norse myth. Comic books featuring Thor have been published across several volumes since the character's introduction.
Walt Simonson wrote a celebrated run of Thor in the 1980s.
Jason Aaron was an influential writer for Thor in the 2010s.
Journey into Mystery #83 (Aug. 1962), the debut of Thor. Cover art by Jack Kirby and Joe Sinnott.
Cover of Thor vol. 6, #1 (January 2020), showing Thor's updated costume with visible Thurisaz rune. Art by Olivier Coipel.