Three Giant Snakes

This unnamed trio of giant snakes was summoned during the invasion of Konoha.

Appearance
The snakes were brown in colour with darker tomoe-like patches all over their bodies. They towered over several structures in Konohagakure including the boundary wall of the village. Each snake wore a red scarf around the base of their heads. In the anime, these snakes are merged together towards their tails.

Invasion of Konoha
The snake required numerous Sunagakure and Otogakure ninja to summon it, probably done due to it being very difficult for a single summoner to call them forth. It was tasked with breaching the first defensive lines of Konohagakure. One of these snakes was crushed by Jiraiya when he summoned Gamahiro using the Summoning: Food Cart Destroyer Technique.

Trivia

 * As stated in Naruto episode 68, the snakes were boa constrictors.