Sgt. Frog

Sgt. Frog, known in Japan as Keroro Gunso (Japanese: ケロロ軍曹, Hepburn: Keroro Gunsō; lit. 'Sergeant Keroro'), is a Japanese manga series written and illustrated by Mine Yoshizaki. It was launched in Monthly Shōnen Ace in April 1999. The story follows the attempts of a platoon of frog-like alien invaders to conquer Earth. Sergeant Keroro, the titular character, is the leader of the platoon, but is at the mercy of a human family of three after being captured by them. Keroro is forced to do meaningless chores and errands for the family after his army abandons his platoon on Earth. The series was later adapted into an anime television series by Sunrise, which ran for 358 episodes from April 2004 to April 2011. A second 23-episode series was broadcast from March to September 2014. A new anime project was announced in April 2024 to celebrate the 20th anniversary of the original anime, and was released as a film in June 2026. A new anime television series is set to premiere in October 2026. The manga was released in North America by Tokyopop from March 9, 2004, to May 10, 2011 (for a total of 21 volumes), and later digitally by Viz Media since December 2014. A first English dub of the anime series aired on the Southeast Asian TV channel Animax Asia in 2008, with the title Sergeant Keroro; Funimation Entertainment released a second 78-episode English dubbed version in North America in 2009, which aired as Sgt. Frog on Crunchyroll, Funimation and later on Netflix, as well as on DVD sets. Discotek Media re-released the Funimation dub in SD Blu-ray in 2021. In 2005, the manga received the 50th Shogakukan Manga Award for the children's manga category.