Dr. Otto Octavius (Doc Ock)

Dr. Otto Octavius is a highly intelligent and prideful scientist, better known as the criminal mastermind Doctor Octopus. During an atomic research project, Octavius' body was fused to four mechanical, tentacle-like arms, also causing him severe brain damage that turned him into a criminal. He clashed with Spider-Man and went to become one of his greatest enemies.