Gama

is the first toad named in the series, debuting alongside Jiraiya. This toad seems to be the keeper of the Toad Summoning contract scroll.

Appearance
Gama is a very large toad, enough for Jiraiya to ride on his back. His orange skin is covered in blue markings, he has bandages wrapped around his chest and left foreleg, and wears a necklace with seven large beads on it, with the kanji for "loyalty" (忠, chū) on the central, largest one. In battle, he is almost always seen wearing samurai armour, composed of a plate cuirass and arm-guards paired with traditional samurai pauldrons.

Personality
Gama has not yet been seen talking, only croaking once or twice and mainly in the anime, so his personality is mostly unknown. However, he seems to be deeply loyal to Jiraiya, following him around and immediately obeying his orders; he was also the only summon shown to strike the same pose as Jiraiya.

Abilities
Gama seems to be skilled in taijutsu, which benefits from his large size and toad traits, as seen when smashing around a skilled ninja such as Ebisu with his long, extendable tongue. He also appears to possess considerably great strength, being capable of blocking an attack from Kisame Hoshigaki, known for being immensely strong, with his armour, which prevented him from having his chakra absorbed by Kisame’s Samehada.

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.

Part II
Gama takes part in Jiraiya and Naruto's training between Part I and Part II.