This is a timeline of select events in Keroro Gunso.
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Timeline
1999
- December 1 - Keroro Gunso 1 released.
2000
- July 1 - Keroro Gunso 2 released.
2001
- March 1 - Keroro Gunso 3 released.
- October 1 - Keroro Gunso 4 released.
2002
- June 1 - Keroro Gunso 5 released.
2003
- February 1 - Keroro Gunso 6 released.
- October 1 - Keroro Gunso 7 released.
2004
- March 27 - Keroro Gunso 8 released.
- April 3 - Keroro Gunso anime started.
- August 10 - Keroro Gunso 9 released.
- September 29 - Keroro Gunso: Meromero Battle Royale released.
- December 9 - Keroro Gunso: Showdown! Gekisō Keronprix Epic Battle de arimasu! released.
2005
- February 26 - Keroro Gunso 10 released.
- March 11 - Keroro Gunso: Kero and Typing de arimasu! released.
- April 1 - Keroro Gunso season 2 (52-) started.
- October 8 - Keroro Gunso 11 released.
- November 16 - Keroro Gunso: Meromero Battle Royale Z released.
2006
- February 25 - Keroro Gunso 12 released, Keroro 4koma 1 released.
- March 11 - Keroro Gunso the Super Movie released.
- April 7 - Keroro Gunso season 3 (104-) started.
- July 26 - Keroro Gunso 13 released.
2007
- February 26 - Keroro Gunso 14 released, Keroro 4koma 2 released.
- March 17 - Keroro Gunso the Super Movie 2: The Deep Sea Princess de arimasu! released.
- April 7 - Keroro Gunso season 4 (155-) started.
- July 26 - Keroro Gunso 15 released, Keroro 4koma 3 released.
2008
- February 26 - Keroro Gunso 16 released.
- February 28 - Keroro Gunso the Super Movie 3: Great Sky Adventure de arimasu! released.
- March 1 - Keroro Gunso the Super Movie 3: Keroro vs. Keroro Great Sky Duel de arimasu! released.
- April 5 - Keroro Gunso season 5 (206-) started.
- July 1 - Keroro Gunso anime English dub first aired on Animax in various countries.
- July 26 - Keroro Gunso 17 released, 4koma Manga: Keroro and Happy Friends (Mario Series) released.
- November 26 - 4koma Manga: Keroro and Happy Friends (Hachi-ji da yo! Zen'in Shuugou) released.
2009
- February 19 - Keroro Gunso the Super Movie: Gekishin Dragon Warriors de arimasu! (game) released.
- February 26 - Keroro Gunso 16 released, 4koma Manga: Keroro and the Happoko Pekoponian People released.
- March 7 - Keroro Gunso the Super Movie: Gekishin Dragon Warriors de arimasu! released.
- April 4 - Keroro Gunso season 6 (257-) started.
- July 25 - Keroro Gunso 19 released.
2010
- February 26 - Keroro Gunso 20 released.
- April 3 - Keroro Gunso season 7 (308-) started.
- September 25 - Keroro Gunso 21 released.
2011
- July 26 - Keroro Gunso 22 released.
- April 3 - Keroro Gunso Anime ended.
2012
- March 26 - Keroro Gunso 23 released.
2013
- January 26 - Keroro Gunso 24 released.
2014
2015
- March 26 - Keroro Gunso 26 released.
2016
- May 26 - Keroro Gunso 27 released.
2017
- April 25 - Keroro Gunso 28 released
2018
- May 26 - Keroro Gunso 29 released
2019
- May 25 - Keroro Gunso 30 released
2020
- December 25 - Keroro Gunso 31 released
2021
- Nothing
2022
- April 26 - Keroro Gunso 32 released
2023
- May 26 - Keroro Gunso 33 released
2024
- April 1 - Keroro Gunso 20th Anniversary series trailer released
- August 26 - Keroro Gunso 34 released
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