Doctor Octopus

Dr. Octopus is one of Spiderman's perennial nemeses. He was formerly Dr. Otto Octavius, Norman Osborn's personal scientist for creating criminals to battle the web slinger. But secretly, Otto planned to quit his services to Osborn and work indepently in order to create an alternate energy source for mankind's benefit. After a lab accident occured that fused his robotic arms to his spinal cord, Otto went mad and became the criminal, Dr. Octopus. He then joined forces with the Horned King, creating all new mutations to the Heartless and special weapons for the dark armies of Xehanort. When Dr. Octopus battled Spiderman and Sora in his home world and lost, Vanitas stabbed Dr. Octopus's heart, transforming the criminal into an upgraded form with greater strength. Even in this form, Octopus failed to defeat Sora and was promptly abandoned by the Horned King for his failure.