Suggested by Destroyer Gigan has been taking opponents down for as long as I can remember. He is an incredibly fierce fighter who consistently outranks all who would dare oppose him. The Sharktopus is no exception. It may be a vicious fighter who chomps away at anything in its path, but Gigan is partially robotic so there’s really nothing for the Sharktopus to sink his teeth into. Gigan is too durable. Gigan wins.