Gama

is the first toad named in the series, debuting alongside Jiraiya. He is almost always seen wearing samurai armour in battle. He was the only summon shown to strike the same pose as Jiraiya. This toad seems to be the keeper of the Toad Summoning contract scroll. Gama has not yet been seen talking, only croaking once or twice and mainly in the anime. He wears a necklace with the kanji for.

Chūnin Exam Arc
Gama is first summoned to tongue-whip Ebisu for annoying Jiraiya at the hot springs. He's summoned again soon afterwards to give the contract scroll for the Gama family to Naruto Uzumaki. There he stayed for a little while, while watching Naruto fail in summoning a real toad.

Search for Tsunade Arc
He was later summoned by Jiraiya, clad in armour to block Kisame Hoshigaki's attack on Naruto Uzumaki.

Land of Rice Fields Arc
In the anime, he is summoned to save Naruto from Kagerō's Earth Release: Antlion Technique.

Invasion of Pain Arc
Gama is seen shortly in Following the Master's Shadow, during a flashback with Jiraiya while training Naruto in between Part I and Part II.