Janin

The were a trio of brothers with special ninjutsu.

History
The Janin took over the Land of Vegetables with the aid of disloyal and greedy courtiers. After their rise to power, they betrayed their allies and mercilessly killed them all. The three brothers were distrusting of each other. Renga states that he would have killed Jiga and Ruiga if the shinobi from Konohagakure hadn't already done so. Ruiga was killed by Jiga, who in turn died due to his weakness being exploited by Hinata Hyūga. Renga was left at the mercy of his enemies, but Haruna seemed to be unable to go through with killing him in revenge, leaving the latter's fate unknown.

Trivia
The brothers could be part of Yuki Clan or at least from Kirigakure. The evidence that supports this is Renga and Ruiga both have water based abilities. Ruiga uses Water Release and Renga takes the water in the air to form it into an Ice Disk. Also all the brothers believe in using others much like other hidden mist characters we have seen in the show before like Zabuza and Gengo. Yurinojō also says that they came from across the sea and Kirigakure is on island.

Janin