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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