Team Hiruzen

Team Hiruzen nicknamed  The Legendary Sannin is the collective name of three renowned ninja from Konohagakure, who are hailed as three of the greatest ninja of their time. While all three eventually left the village at some point for their own reasons, they all retained their renown from their title of Legendary Three Ninja (伝説の三忍, Densetsu no Sannin).

Trivia

 * Each member of Team Hiruzen has trained one member of Team Kakashi: Jiraiya has trained Uzumaki Naruto, Tsunade has trained Haruno Sakura, and Orochimaru has trained Uchiha Sasuke.
 * The Sannin are all masters of the Summoning Technique and summon using their left hand.
 * All three of the Sannin have, at one point, been eligible for the position of Hokage.
 * On more than one occasion, Team Hiruzen has been shown to wear similar type of clothing, ranging from the same flak jacket model to robes with fishnets, a trait not very common amongst other teams.
 * Despite being three of the most powerful shinobi Konoha has ever produced, each of them departed from Konoha for different reasons. Orochimaru left to join Akatsuki and further develop his kinjutsu, Jiraiya went to gather information on Orochimaru, Akatsuki's movements, and find The Child of the Prophecy, and Tsunade lost all confidence in her healing ability and went into self-imposed exile.
 * The Sannin are named after the characters in the Japanese folktale Jiraiya Goketsu Monogatari.
 * The world wide game "scissors, paper, stone" originated from China during the Eastern Han Dynasty (25-220), invented by the warlords of that period. Except instead of paper, they used the open palm symbol to represent cloth, so it's "Scissors, Stone, Cloth". The game reached Japan in the early 1640s and one variation of the game was the "Slug, Snake, Frog" variation. In this variation, the Frog is afraid of the Snake, the Snake is afraid of the Slug, and the Slug is afraid of the Frog. This is influenced by the Sansukumi way of thinking where it keeps the three objects in a deadlock. The fact that the Sannin use these three animals as summons may be the author hinting that there is no stronger one among them, and that their strength is more or less equal.
 * The Sannin once had a friend named Hiruko who later became a missing-nin that appeared in Naruto Shippūden 3: Inheritors of the Will of Fire.

all information on Team Hiruzen came from http://naruto.wikia.com/wiki/Sannin