Actor

Koji Ishii

68 credited titles on WatchWise

Koji Ishii (石井康嗣, born 石井浩司, both read as Ishii Kōji, July 1, 1960) is a Japanese voice actor (seiyuu) from the Arida City, Wakayama Prefecture, Japan. He was formerly affiliated with Ken Production, Beniya 25 Ji, and Vi-Vo. He is freelance and is in a business partnership with AMBERnote since April 1, 2022.

Koji Ishii in one minute

Strongest genre

Comedy

$4.2M · 100% hit rate

Biggest hit

Ready

$27M

Standout efficiency

4.7x

Ready · gross ÷ budget

Commercial performance

Associated lifetime gross

$4.5M

Combined reported budget

$2.0M

Gross / budget

2.3x

Bankability Index

25 / 100

All figures are associated, not attributed — box-office numbers are sourced from TMDB and Wikipedia (reused under CC BY-SA), shown in US$, and weighted by billing prominence. Coverage varies by title; figures are estimates, not audited trade data.