Kōichi Yamadera Biography: Age, Movies, Ethnicity, Height, Net Worth, Religion, Wife, Awards
Kōichi Yamadera is a legendary Japanese voice actor, actor, and narrator renowned for his versatile performances in anime, films, and dubbing.
With his distinctive voice and wide emotional range, he has brought iconic characters to life, inspiring generations of fans and aspiring talents through decades of dedicated work in Japanese entertainment.
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| Name: | Kōichi Yamadera |
| Born: | June 17, 1961 (age 65 years old) |
| Place of Birth: | Shiogama, Miyagi, Japan |
| Nationality: | Japanese |
| Ethnicity: | Japanese |
| Height: | 1.76 m (176 cm) |
| Religion: | Buddhism |
| Parents: | Mr. and Mrs. Yamadera |
| Spouse: | Rio Hinata, Mie Sonozaki (former) |
| Relationship: | Divorced |
| Occupation: | Voice Actor, Actor, Narrator |
| Net Worth: | $10 million USD |
Early Life and Education
Kōichi Yamadera was born on June 17, 1961, in Shiogama, Miyagi, Japan. He grew up with parents Mr. Yamadera and Mrs. Yamadera. Ethnicity is Japanese. He has siblings whose details remain unknown.
His religion is Buddhism. He graduated from Tōhoku Gakuin University and began his career in broadcasting before transitioning to voice acting, developing his skills through training and early radio work.
Career
Kōichi Yamadera started his professional journey in the 1980s as a radio personality and quickly became one of Japan’s most sought-after voice actors.
He is best known for voicing Spike Spiegel in Cowboy Bebop, Ryuk in Death Note, the Japanese dubbing voice for many Hollywood stars including Eddie Murphy and Jim Carrey, and roles in Ghost in the Shell, Neon Genesis Evangelion, and Pokémon.
He has narrated numerous documentaries and appeared in live-action films and stage productions.
His remarkable range across comedy, drama, and action has earned him a legendary status in the anime and dubbing industry. He continues to take on prominent projects with consistent excellence.
Social Media
Kōichi Yamadera does not have a social media account.
Personal Life
Kōichi Yamadera, 65 years old, was previously married to voice actress Rio Hinata and later to voice actress Mie Sonozaki, both relationships ending in divorce. No children are reported.
He maintains a private life focused on his craft and personal interests. No other publicly known past relationships are widely detailed. He remains single and dedicated to his professional journey. His height is 1.76 m (176 cm).

Net Worth
Kōichi Yamadera’s net worth is estimated at $10 million USD. Income derives mainly from his extensive voice acting work in anime, film dubbing, narration, radio, and related entertainment projects accumulated over more than four decades.
Filmography
- Cowboy Bebop (Spike Spiegel)
- Death Note (Ryuk)
- Ghost in the Shell series
- Neon Genesis Evangelion
- Pokémon (various roles)
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