Gamariki

Gamariki is a toad summon with a femine appearance. However, he is male.

Hunt for the Three Tails
After Naruto got fired out of the hospital, Jiraiya offers him to train again and they set off for a journey. Jiraiya wants him to train with synchronizing jutsu and therefore summons Gamariki. Both Jiraiya and Naruto seem to know Gamariki, who is spoken to with Gamariki-san (can be translated as Mister Gamariki). Gamariki and Jiraiya show Naruto what a synchronizing jutsu is, and then Gamariki goes training with Naruto.Tough that Naruto seems not to be able to work with Gamariki and tries to summon someone else(presumably more powerfull) so that he can work on a new combo jutsu.