Toshihiko Seki provided the voice of William Birkin in the Japanese versions of Biohazard Operation Raccoon City, and BIOHAZARD RE:2. He also played Kogorō Tenzai in Project ✕ Zone. Outside Resident Evil, he is best known as the voice of Momotaros of the series Kamen Rider Den-O.
- Resident Evil: Operation Raccoon City credits
- Resident Evil 2 Credits (PlayStation 4). MobyGames. Retrieved on 2019-06-21.
- Resident Evil 2 (2019 Video Game) Full Cast & Crew. IMDb. Retrieved on 2019-10-05.
- Project X Zone (2012 Video Game) Full Cast & Crew. IMDb. Retrieved on 2018-03-28.