Gamaken

Gamaken is a giant magenta-coloured toad with black markings on his face, arms, and legs with horn like protrusions on his head. He is as big as Gamabunta, and towers over most buildings (except for the massive skyscrapers in Amegakure which dwarfed even other summons), trees and large rock formations. He wears a black kimono with a white sash and mesh armour underneath. He keeps a sakazuki-like shield wrapped around his back and his sasumata in his hand.

In the anime, Gamaken was summoned by Jiraiya to make an escape after he entered the Nadeshiko Village to do "research" for his next novel.