Karstan
Karstan is a fictional character appearing in American comic books published by Marvel Comics. The character was created by writer Al Milgrom and artist Herb Trimpe. Karstan first appeared in The Spectacular Spider-Man #80 in July 1983. His initial appearances placed him as an antagonist to the superhero Spider-Man.
Karstan's background is rooted in his membership in a race of extraterrestrial beings known as the K'rll.
Over his comic book history, Karstan has engaged in several conflicts with Spider-Man and other Marvel heroes.