|Born:||March 31, 1973, Tokyo, Japan|
|Years active:||1990s - now|
Hisanori Koyatsu (小谷津央典 Koyatsu Hisanori) is a voice actor affiliated to Haikyo. He is the first voice actor of Ultraman Cosmos but unlike his successors, he only has one role and has yet to reprise it in the future.
- Keroro Gunso - Voice of Alien Megaton