The anime will have a brand-new cast, which will be announced at a later date.
The Sgt. Frog (Keroro Gunso) franchise is receiving a brand new TV anime series titled Kerokero Gunsō ☆. The staff for the franchise announced the new project on the series’ social media accounts. The new anime series will be released in Fall 2026. Previously, a Sgt. Frog anime movie was also announced, which is scheduled for Summer 2026.
Sgt. Frog new anime details
A new teaser visual featuring Sergeant Keroro and Fuyuki has been released for the anime. It was also announced that the new series will feature a brand-new cast, which will be revealed at a later date. No other details about the series have been publicised as of yet.
Previously, a Sgt. Frog anime movie, titled Sgt. Frog the Movie: The Earth is in Mortal Peril as Soon as We Come Back! (Gekijōban ☆ Keroro Gunsō Fukkatsu Shite Sokkō Chikyū Metsubō no Kiki de Arimasu!), was announced. The cast from the old anime are reprising their roles for the film. This includes:
- Sergeant Keroro voiced by Kumiko Watanabe
- Private Second Class Tamama voiced by Etsuko Kozakura
- Corporal Giroro voiced by Jouji Nakata
- Sergeant Major Kururu voiced by Takehito Koyasu
- Lance Corporal Dororo voiced by Takeshi Kusao
Yuichi Fukuda is the chief director and screenwriter of the movie at BN Pictures, while Fumitoshi Oizaki is the director. Satoshi Koike is the character designer for the film.
The Sgt. Frog anime franchise is based on Mine Yoshizaki’s 1999 manga series of the same name. The original anime adaptation by Sunrise aired from April 2004 to April 2011. All episodes of the old show are available on Crunchyroll, which describes the series as:
Keroro is Sergeant Frog - the leader of a platoon of warriors sent to conquer planet Earth. But when the amphibious invaders discovered how much humans enjoy dissecting their comrades, the troops were scattered, the mission was aborted, and Keroro was abandoned. Now, this once proud soldier spends more time wielding a vacuum than he does the weapons of war. It's a far cry from the glory of battle, but hey, at least he's got his own room. And though the invasion may have slowed to a hop, Sergeant Frog still occasionally yearns to overcome his karaoke addiction and reassemble his troops.