Birthday: December 9
Keroro is the main protagonist of the series. Keroro is the sergeant and leader of the Keroro Platoon. His self-introduction at this time is The Gamma Planetary System, the 58th Planet, Space Invasion Army Special Tactics Platoon Leader, Sergeant Keroro.
Keroro lurked in the Hinata household until he was discovered by Natsumi and Fuyuki, after which he was captured. With the Kero Ball, his weapon, taken from him and his army having abandoned him, Keroro easily surrendered. The freeloader (formerly a prisoner of war) becomes troublesome for the Hinata Family. Each time he is found guilty of something, Natsumi physically abuses him to no end. But now, through being the housekeeper of the Hinata household, Keroro has become familiar to living an adventurous life on Earth.
His favorite dishes include fried potatoes, dango, carambolas, and caviar. He also likes making Gunpla and reading manga.
Related anime:Sergeant Frog TV, 2004
Majime ni Fumajime Kaiketsu Zorori Nazo no Otakara Daisakusen Movie, 2006
Gekijouban Keroro Gunsou Movie, 2006
Chibi Kero: Kerobouru no Himitsu!? Special, 2007
Chibi Kero: Secret of the Kero Ball Movie, 2007
Chou Gekijouban Keroro Gunsou 2 Shinkai no Princess de arimasu! Movie, 2007
Chou Gekijouban Keroro Gunsou 3: Keroro Tai Keroro - Tenkuu Daikessen de Arimasu! Movie, 2008
Keroro Gunsou: KeroZero Shupattsudayo! Zeninshuugou! Special, 2009
Chou Gekijouban Keroro Gunsou: Gekishin Dragon Warriors de Arimasu! Movie, 2009
Chou Gekijouban Keroro Gunsou 5: Kyuukyoku Keroro, Kiseki no Jikuu-jima, de arimasu!! Movie, 2010
Chou Gekijouban Keroro Gunsou Tanjou! Kyuukyoku Keroro Kiseki no Jikuujima de Arimasu! Movie, 2010
Keroro TV, 2014
Related manga:Sgt. Frog Manga, 1999