Ryōtarō Okiayu is a Japanese actor, voice actor and singer affiliated with Aoni Production. His major roles include Byakuya Kuchiki in Bleach, Treize Khushrenada in Mobile Suit Gundam Wing, Hisashi Mitsui in Slam Dunk, Meisuke Nueno in Hell Teacher Nūbē, Kunimitsu Tezuka in The Prince of Tennis, Alucard in Castlevania, Zero in Mega Man X, Yuu Matsuura in Marmalade Boy, Shigure Sohma in Fruits Basket, Dark in D.N. From Wikipedia
