Gigan (ガイガン Gaigan?) is an alien cyborg kaiju created by Toho that first appeared in the 1972 Godzilla film, Godzilla vs. Gigan. Gigan is truly a strange monster, sporting a circular saw weapon located in his frontal abdominal region, large steel hooks for hands with smaller ones for toes, spikes running down his tail, three, large fin-like spines on his back and a red cybernetic visor for an eye.
He also bears various avian characteristics, such as a 'crest' made of metal spines and a metal beak. In the Showa series, Gigan's skin was a dark green color and he possessed golden scales over several parts of his body. In Godzilla: Final Wars, Gigan's appearance was changed to make him appear more cybernetic. In this film, Gigan's skin is now a dark blue, his body is much thinner and more streamlined, and there are wire-like structures running across his body.
When Gigan is revived as Modified Gigan, his hook hands are replaced with double-pronged chainsaws. Gigan's new design for the Millennium series was praised by many and ranked among fans as one of the best improvements to any monster.