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.