As the last opponent during the third round of the Dark Tournament, Risho was a big douche.
He got the tournament committee to rule Yusuke ineligible to fight. Forcing Kuwabara to make a bold and desperate last stand against him.
He had the ability to form layers of clay around his body as armor. It was kind of a cool power.
Kuwabara almost died against him, until he saw his beloved Yukina.
For which he started to lose his cool.
It was amazing that his Spirit Sword was able to go through that clay armor so easily.
One of the few characters to get badly beaten by Kuwabara.