Doctor Octopus

Doctor Octopus (Dr. Otto Octavius), also known as Doc Ock for short, is a fictional character appearing in American comic books published by Marvel Comics. The character was created by Stan Lee and Steve Ditko and first appeared in The Amazing Spider-Man #3 (July 1963). He is a highly intelligent, myopic, and stocky mad scientist who sports four strong and durable appendages resembling an octopus's tentacles, which extend from his body and can be used for various purposes. After his mechanical harness became permanently fused to his body during a laboratory accident, he turned to a life of crime, and came into conflict with the superhero Spider-Man. He has endured as one of Spider-Man's most prominent villains, and is regarded as one of his three archenemies, alongside the Green Goblin and Venom. He is the founder and leader of the Sinister Six, the first supervillain team to oppose Spider-Man.

While usually portrayed as a supervillain, Doctor Octopus has also been occasionally depicted as a conflicted antihero and ally of Spider-Man. Following Spider-Man's death in the 2012 storyline "Dying Wish", which saw a dying Octavius swapping bodies with the hero and letting him die in his original body, Octavius was motivated to prove he could be a better Spider-Man. As such, he adopted the Superior Spider-Man alias, introduced in Avenging Spider-Man #15.1 following a cameo in Daredevil vol. 3 #21 (both December 2012), as the fourth predominant main continuity Spider-Man. The Superior Spider-Man possesses all of the original Spider-Man's abilities, memories, and equipment, along with additional gadgets created by Octavius, though he often struggles to live up to his predecessor's legacy and seeks to turn his life around after being a villain for years.