
Nara Prefecture, Japan
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).

as Yamamoto (voice)

as Cherry (voice)
2011

as Gukku (voice)
2006

as Yamamoto (voice)
2002

as Ancient Languages Teacher (voice)
2014

as Gerozaemon Geroda (voice)
2025

as Varudarosu
1998

as Kunks Butylmercaptan (voice)
2018

as Kenjiro Takoda (voice)
2024

as Tireloid (voice)
2012

as Madarao (voice)
2006

as Toshiaki Hayami / Bio-Freezer (voice)
2005

as Ametarou (voice)
2006
as Shikai (voice)
2010

as Producer (voice)
2017

as Anaheim Electronics Plant Manager (voice)
2016

as Shikai (voice)
2010

as Murata Tetsuya (voice)
2010

as Taicho (voice)
2003

as Man (voice)
2002

as Employee (voice)
1999
as Yamamoto (voice)
663 ep.

as Cherry (voice)
1 episodes

as Gukku (voice)
1 episodes

as Yamamoto (voice)
663 episodes

as Ancient Languages Teacher (voice)
1 episodes

as Gerozaemon Geroda (voice)
11 episodes

as Varudarosu
26 episodes

as Kunks Butylmercaptan (voice)
1 episodes

as Kenjiro Takoda (voice)
14 episodes

as Tireloid (voice)
1 episodes

as Madarao (voice)
52 episodes

as Toshiaki Hayami / Bio-Freezer (voice)
26 episodes

as Ametarou (voice)
51 episodes

as Kawai Tsuginosuke
26 episodes

as Alien 2 (voice)
2 episodes