Ryōtarō Okiayu (置鮎 龍太郎 Okiayu Ryōtarō?) is a Japanese voice actor and singer. He is currently affiliated with Aoni Production.

Okiayu is the original voice actor for Alucard in four Japanese versions of Castlevania games: Castlevania: Symphony of the Night, Castlevania: Aria of Sorrow, Castlevania: Dawn of Sorrow (as Genya Arikado), Castlevania: Harmony of Despair, and also reprising the role in Super Smash Bros. Ultimate. He also provided the Japanese voice of Trevor Belmont in the Netflix Castlevania animated series.[1]

Okiayu's other famous character roles include Treize Khushrenada in New Mobile Report Gundam Wing, Hisashi Mitsui in the Slam Dunk series, Yuu Matsuura in Marmalade Boy, Meisuke Nueno in Hell Teacher Nūbē, and Zero in the Mega Man X series.


  1. Famitsu — "アニメ『悪魔城ドラキュラ ―キャッスルヴァニア―』予告編映像と吹き替えキャスト情報を公開【動画あり】 (July 5, 2017)

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