About
Masayori "Masi" Oka is a Japanese actor, producer, and digital effects artist who has gained recognition for his work in both entertainment and technology. He is widely known for his role as Hiro Nakamura on the NBC series *Heroes*, for which he received a Primetime Emmy Award nomination. Oka also starred as Doctor Max Bergman on the CBS series *Hawaii Five-0*. In addition to his acting career, he has worked as a digital effects artist on several films and remains involved in technology and innovation.
Career Timeline
Heroes Breakthrough Role
Gained recognition as Hiro Nakamura on 'Heroes'.
Emmy Nomination for Heroes
Earned a Primetime Emmy Award nomination.
Joins Hawaii Five-0
Starred as Doctor Max Bergman on 'Hawaii Five-0'.
Continued Success Five-0
Five-0 was a popular procedural that gave him steady work.
Smaller TV and Film Roles
Moved towards smaller roles in TV and Film
Digital Effects and Producing
Continued working as a digital effects artist.
Continued work in TV
Continues to work both in front of and behind the camera.
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Last updated: February 21, 2026