Genshō Ryūdōin

and his brothers, Rokkaku and Jakō, were introduced in the anime.

Third Great Beast arc
They sought revenge on Might Guy for their father's humiliation and death. He apparently has the ability to manipulate wood puppets. He captured Might Guy in a house made from the wooden pieces the puppets consist of, and tired him out there. After Naruto and Team Guy showed up, he, along with his brothers, added more puppet parts to the house, so that it became like a traditional Japanese castle. Despite knowing it was a trap, Lee rushed in, taking the chance. In order to get his revenge, Genshō used Wooden Men Possession Turnover Manipulation Technique to force Guy to fight to the death with Rock Lee. Guy realized he was fighting Lee, and Genshō's plan failed. He was then taken to the medical corps.

Naruto: Path of the Ninja 2
Genshō also made an appearance in Naruto: Path of the Ninja 2. In the game he was trying to conquer the world using the Spirit Beast. With the Spirit Beast's evil spirits, he would force friends to fight against friends. In the end, Rokkaku was killed, Genshō killed Jakō by using Explosion: Disappearance Killing Technique, and Naruto defeated Genshō after he combined with the newly resurrected Spirit Beast. He was able to create purple rays of infinite pain, draining all power from enemies. This Genshō was radically different from his anime counterpart.

Trivia

 * Genshō's name means "phantom general."
 * Gensho's eyes are similar to those of Hanzō, Sasuke Uchiha in his 2nd curse seal form and Kakuzu.