Takeharu Oonishi (大西 健晴, Ōnishi Takeharu, born July 8, 1967) is a Japanese seiyū (voice actor) and stage actor from Nara Prefecture. He is affiliated with Arts Vision and is a founding member of the theater company Akapera. He speaks the Kansai dialect. He is married to voice actress Masayo Kurata (倉田 雅世).
Case Closed: The Crimson Love Letter
As Producer (voice)
Crayon Shin-chan: Explosion! The Hot Spring's Feel Good Final Battle
As Employee (voice)
Gintama: The Movie
As Murata Tetsuya (voice)
Crayon Shin-chan: The Glorious Storm-invoking Yakiniku Road
As Taicho
Atashin'chi: The 3D Movie
As Shikai (voice)
Mobile Suit Gundam: The Origin IV – Eve of Destiny
As Anaheim Electronics Plant Manager (voice)
The Boy and the Sea Turtle
As Man (voice)
My Family
As Yamamoto (voice)
Popolocrois Monogatari
As Gon
Intrigue in the Bakumatsu – Irohanihoheto
As Kawai Tsuginosuke
Puni Puni Poemy
As Alien 2 (voice)
Tokumei Sentai Go-Busters
As Tireloid (voice)
Kaitou Sentai Lupinranger vs. Keisatsu Sentai Patranger
As Kunks Butylmercaptan (voice)
Death Note
As Gukku (voice)
Hunter x Hunter
As Cherry (voice)
Parasyte -the maxim-
As Ancient Languages Teacher (voice)
Kekkaishi
As Madarao (voice)
Guyver: The Bioboosted Armor
As Toshiaki Hayami / Bio-Freezer (voice)
Pururun! Shizuku-chan
As Ametarou (voice)
The Fable
As Kenjiro Takoda (voice)
YAIBA: Samurai Legend
As Gerozaemon Geroda (voice)