
Actor
Isamu Tanonaka
Born 1932 · Setagaya, Tokyo, Japan
was a Japanese voice actor from Taitō, Tokyo. He was best known for voicing Medama Oyaji in nearly every adaptation of Shigeru Mizuki's GeGeGe no Kitarō made during his lifetime. During his life he had been attached to Gekidan Tōgei and then Theatre Echo; he was attached to Aoni Production at the time of his death. He had a naturally deep voice but became famous for voicing characters with a high pitched voice. In addition to GeGeGe no Kitarō, he also had prominent roles in Tensai Bakabon (as the first voice of Honkan-san), Mazinger Z (as Mucha), Paul's Miraculous Adventure (as Doppe), Magical Princess Minky Momo (as Sindbook), Akuma-kun (as Youaltepuztli), Dr. Slump & Arale-chan (as Gara and Akira Toriyama), Dragon Quest: Dai no Daibōken (as Brass), and the Shin Megami Tensei: Persona series (as Igor).
Acting

Monster
Old Man (voice) · 2004

Mazinger Z
Mucha · 1972

Dragon Quest: The Adventure of Dai
Gramps Brass · 1991

One Piece: Clockwork Island Adventure
Boo Jack (voice) · 2001

Dr. Slump
Gala (voice) · 1981

Steel Jeeg
Ootone · 1975

UFO Robot Grendizer
Mucha (voice) · 1975

Person3 THE MOVIE #1 Spring of Birth
Igor (voice) · 2013

PERSONA 4 the Animation
Igor (voice) · 2011

Persona3 THE MOVIE #2 Midsummer Knight's Dream
Igor (voice) · 2014

Persona3 THE MOVIE #3 Falling Down
Igor (voice) · 2015

Tomorrow's Joe
Miss Oyama · 1970

Persona3 the Movie #4 Winter of Rebirth
Igor (voice) · 2016

The Wonderful World of Puss 'n Boots
Killer Cat B (voice) · 1969

Graveyard Kitaro
Medama Oyaji (voice) · 2008

The Fantastic Adventures of Unico
God 3 (voice) · 1981

Chouriki Sentai Ohranger
Bara-Baby (voice) · 1995

Persona 4 The Golden Animation
Igor (voice) · 2014

Cackling Kitarou
Medama Oyaji · 2007

Kirato Saw Honorable Death With No Surrender ~ Mizuki Shigeru's War
Medama Oyaji (voice) · 2008

Cackling Kitarou
Medama Oyaji (voice) · 1968

Cackling Kitarou
眼球老爹(配音) · 1971

Transformers: Super-God Masterforce
Donq (Humans) · 1988

Cackling Kitarou
Medama-oyaji · 1985