Common Frog - This is more or less Jiraiya's helper frog or possibly his look out frog. It was seen facing the open area while Jiraiya was peeping at the women in the hot springs. This frog has no specified name.
Demolisher Frog - This gigantic frog was summoned by Jiraiya to help defend Konoha during the Sound/Sand invasion and also made an appearance at the hospital when Jiraiya came to tell Naruto about the intensive 2 and a half year training he was taking him on.
Gamabunta - Gamabunta is the king of all frogs. He was summoned by the 4th Hokage to battle the Kyuubi, by Jiraiya when the 3 Senins battled, and by Naruto during his teaching of the Kuchiyose no Jutsu and battle against Shukaku.
Gamaken - This is another one of Jirayia's toad summons which he calls upon in the battle with Pain. Gamaken carries a large shield and staff with a split spiked end.
Gamakichi - Extremely small compared to the other frog summons, Gamakichi is the son of Gamabunta and was summoned by Naruto by accident when he attempted to summon Gamabunta during the Shukaku fight.
Gamatatsu - Gamatatsu is another extremely small frog. He is the son of Gamabunta and brother of Gamakichi. He was accidentally summoned by Naruto during the fight with Shukaku and was also summoned in the first episode of the series. It is safe to say, he is the dumbest of the frogs summoned.
Toad Sennin - These two toads named Ma and Pa are advisors to the Elder Toad Sage. They have to ability to combine with Jiraiya. When they do, Jiraiya becomes much stronger and has the ability to use the toad's jutsus.
