Gaira (in Japanese: ガイラ Gaira) is a Frankenstein-spawn kaiju created by Toho that first appeared in the 1966 Toho film, War of the Gargantuas.
Gaira resembles his "brother," Sanda, being a humanoid giant whose body is covered in fur. However, Gaira's skin and fur are a greenish color, and his fur somewhat resembles seaweed, loosely hanging on his body. The top of Gaira's head is flat, his nose is very large and wide, and he has a noticeable underbite, with two fangs on his lower jaw extending outside of his mouth.
In Go! Godman, Gaira has a new head, with no fangs on his lower jaw and a mane of brown hair around his head. In the follow-up series,Go! Greenman, Gaira's suit is worn and beginning to decay, and appears as a much darker color, with much of the suit's fur having fallen off.
In the 2008 Go! Godman film, a new Gaira suit was constructed to replicate his appearance inWar of the Gargantuas. This new suit, designed by Fuyuki Shinada, is nearly identical to Gaira's original appearance, only being a lighter shade of green.