Kitamakura
1 series
Kitamakura is one of the four emperors guarding the prison Riki-Oh starts the series in, being in charge of the east block. He is first seen when the prisoners attempt to attack Sugiyama after the death of Narumi. This prompts the other three emperors to show up, with Kitamakura bursting through the wall behind Sugiyama to grab one of the prisoners rebelling against him and crushing his head with a single hand. He and the other emperors are easily able to scare off the prisoners and silence the riot.
