Rusaburō Enkōgawa

Enkōgawa Rusaburō, commonly called Enryū (猿龍, Enryū), is introduced during during the anime's The New Captain Shūsuke Amagai arc.

Character outline
He is a silent, largely built man with a small mohawk shaped like a lightning bolt. He wears a light undergarment under his Soul Reaper uniform, as well as a pair of sunglasses. From the opening credits, it would seem that he has superhuman strength. Like Kenryū, he is a servant of Rurichiyo Kasumiōji. He takes the responsibility of punishing anyone he believes to be being rude to their princess. It is possible that he is mute, because he has never been shown to speak, even when asking Kenryū about Rurichiyo's location (he uses comical gestures to ask, which Kenryū is able to understand) or releasing his zanpakutō.

Zanpakutō
His zanpakutō's shikai, though unnamed because of his aforementioned silence, takes the form of a pair of fists attached to chains.