Media

Sgt. Frog was first published as a manga by Mine Yoshizaki in April 1999, serialized in Kadokawa's Weekly Shonen Ace imprint. Gaining traction for its humor and pop culture references, it was adapted into an anime by Bandai's Sunrise Studios in 2004. A year after the anime's debut, the manga received the Shogakugan Manga Award in the children's manga category. Around this time, the anime itself became wildly popular and in demand, receiving dubs into 15 languages and broadcasts in around 30 countries. The series also spun off into a collection of five movies, three of which center around the Keronian mutation Kiruru and its many incarnations, as well as fourth and fifth respectively focusing on dragons and the Easter Islands.  Nine video games  were produced across multiple platforms, from the Super Smash-esque Meromero Battle Royale Z to the RPG adventure game The Knight, the Warrior, and the Legendary Pirate.

Although the initial anime ended in 2011, the manga itself continues to run, and a smaller short-length anime was created in 2014. In 2018, to celebrate Sgt. Frog's 20th anniversary, the franchise launched a large-scale traveling display of memorablia, initial sketches and models, themed foods, and multiple attractions such as the chance to draw one's favorite character on a fanart mural. In collaboration with Yoshizaki, Yūtarō Shido created a new manga, Super Sgt. Frog Ultra Cool: Keroro Robo's Epic Climactic Battle, the first volume of which was released in October 2018.