Tridium is an element that nuclear scientist Doctor Otto Octavius is convinced will create sustained fusion. Free power for all! Alas, there were some… complications. Complications that exploded and permanently fused the good doctor’s back to a harness with four attached robotic arms. The arms have a mind of their own and Doctor Octavius becomes Doctor Octopus (because of the eight limbs, see what they did there?). Convinced that his experiment will still work, Doc Ock goes on the rampage and becomes one of Spider-Man’s greatest foes. These socks have a mind of their own as well, with a tentacle motif snaking up the sock.