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.
https://en.wikipedia.org/wiki/Doctor_Octopus