Official key art for the new Sgt. Frog series: Keroro floats above Earth in space with Fuyuki, Natsumi and the rest of the Keroro Platoon. Image: TV Tokyo and the Keroro Gunso production committee
Entertainment

Sgt. Frog Is Back With Every Voice Replaced. The Original Keroro Says It Wasn’t the Actors’ Choice

Priya Raman · October 4, 2026 · 5 min read

The new Sgt. Frog TV series premiered in Japan on Saturday with an entirely new voice cast, three months after the original actors starred in a Sgt. Frog film. Kumiko Watanabe, the voice of Keroro for 22 years, has said the change wasn't the actors' idea. Fans spent the morning comparing old voices with new ones.

Keroro Gunsō ☆ debuted at 9:30 a.m. on October 3 on TV Tokyo and its affiliates, on a Saturday morning, just as the first Sgt. Frog series did on April 3, 2004. Crunchyroll is streaming it with English subtitles everywhere except Asia, under the title KERORO☆. BN Pictures animates it, with Nobuhiro Kondō as chief director and Akihiko Sano directing.

Every voice is new. Makoto Koichi now plays Sergeant Keroro, the would-be invader from planet Keron who'd rather build model kits than conquer anything. Toshiki Masuda, Rika Nagae, Kōsuke Echigoya and Satoshi Inomata play the rest of the platoon, and the human family that takes Keroro in has new voices as well.

Continue reading