Kōsuke Sasaki

Kosuke Sasaki is a Japanese seiyuu working in Japanese animation. Best known for voicing Guido in Mobile Suit Gundam: Cucuruz Doan's Island (2022), the role placed him in a major theatrical Gundam production directed by Yoshikazu Yasuhiko. With a career still in its early stages, the Guido role stands as his first confirmed screen credit in professional anime voice work.

Kosuke Sasaki’s Entry into the Gundam Universe

Getting cast in a Mobile Suit Gundam theatrical film is no small thing for any voice performer – let alone one with a single professional credit to their name. Kosuke Sasaki made that leap with the 2022 film Mobile Suit Gundam: Cucuruz Doan’s Island, directed by Yoshikazu Yasuhiko, where he voiced Guido, one of the island children at the center of the story. The film itself adapts the 15th episode of the original 1979 Mobile Suit Gundam series and arrived in Japanese theaters on June 3, 2022, carrying the weight of decades of fan history behind it.

Most Known Roles of Kosuke Sasaki

Guido in Mobile Suit Gundam: Cucuruz Doan’s Island (2022 Movie)

Cucuruz Doan’s Island and the Role of Guido

Guido is one of the orphaned children living under the care of Cucuruz Doan on a remote island in the North Atlantic. The children form the emotional backbone of the film – their bond with Doan and their distrust of soldiers like Amuro Ray carry much of the story’s quiet tension. Voicing a child character in a major Gundam theatrical production requires a natural, unaffected delivery, and landing that kind of role marks a notable starting point for a young seiyuu still building their credits.