Keroro Gunsou

Sgt. Frog

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Alternative Titles

Synonyms: Sergeant Frog
Japanese: ケロロ軍曹
English: Sgt. Frog
More titles


Type: TV
Episodes: 358
Status: Finished Airing
Aired: Apr 3, 2004 to Apr 4, 2011
Premiered: Spring 2004
Broadcast: Unknown
Studios: Sunrise
Source: Manga
Genres: ComedyComedy, Sci-FiSci-Fi
Theme: ParodyParody
Demographic: ShounenShounen
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.701 (scored by 3527335,273 users)
1 indicates a weighted score.
Ranked: #12392
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #2459
Members: 78,335
Favorites: 1,229

Available At


Streaming Platforms

Ranked #1239Popularity #2459Members 78,335
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Episodes: /358


It is the year 2004 AD, and pandemonium breaks as a mysterious frog-like alien race fills the sky with UFOs—or so 12-year-old Fuyuki Hinata dreams. Coincidentally, Sergeant Keroro, leader of a preliminary squad for the Keronian invasion of Pekopon—the alien name for Earth—begins his mission by invading Fuyuki's home. After subduing the boy and his sister, Keroro plans to reunite with his comrades and return to the mothership to repair his invaluable invasion device, the Kero Ball. Unfortunately, he receives word that headquarters has abandoned his unit's retrieval due to an unprecedented issue that forced the rest of the Keronians to flee.

Consequently, Keroro is forced to stay at the Hinata residence together with the friendly, starry-eyed Fuyuki; his athletic, short-tempered sister Natsumi; and their hardworking, attractive mother Aki. Now stuck until further notice, Keroro and his platoon spend each day plotting world domination, but are thwarted each and every time by various unexpected factors. Nevertheless, as they live alongside humans, they learn to treat them as friends and allies, forming comedic yet meaningful connections that make their lives on Earth worthwhile.

[Written by MAL Rewrite]

Characters & Voice Actors


Cook, Justin
Satou, Junichi
Producer, Director, Storyboard, Theme Song Lyrics


Opening Theme

Apple Music
Amazon Music
Youtube Music
1: "KERO! to MARCH" by Nobuaki Kakuda and Juri Ihata (eps 1-51)
2: "Zenkoku Musekinin Jidai" by GAGAGA SP (eps 52-78)
3: "Kimi ni JUICE wo Katte Ageru" by GROUP Tamashii (eps 79-103)
4: "Hareru Michi ~ Uchuujin (Omeera) Awaseru Kao ga nee!~" by JK (eps 104-129)
5: "You-You-You" by POLYSICS (eps 130-154)
6: "Kaettekita KERO! to MARCH" by Ichirou Zaitsu and Yuko Ogura (eps 155-183)
8: "Nante Suteki na Doyoubi" by KERORO Shoutai (eps 206-)
9: "HELLO DARWIN! ~Koukishin ON DEMAND~" by JAM Project (eps 232-256)
10: "KERO! to MARCH (Shoutai Version)" by KERORO Shoutai (eps 257-295)
11: "Mendoku Hoshi March (Shoutai Version)" by KERORO Shoutai (eps 296-358)

Ending Theme

1: "AFRO Gunsou (アフロ軍曹)" by DANCE MAN (eps 1-18,27-39)
2: "PEKOPON Shinryaku Ondo (地球(ペコポン)侵略音頭)" by ONDO GIRL meets KERORO Shoutai (eps 19-26)
3: "KERORO Shoutai Kounin! Netsuretsu Kangeiteki Ekaki Uta!! (ケロロ小隊公認!熱烈歓迎的えかきうた!!)" by KERORO ALLSTARS (eps 40-51)
4: "Katte ni SHINRYAKUSHA (勝手に侵略者(シンリャクシャ))" by Naoya Ogawa and Mayuko Iwasa (eps 52-78)
5: "KOKORO no Mondai (ココロの問題)" by toutou (eps 79-103)
6: "Shouri no Hanabira (勝利の花びら)" by Chinatouchable (eps 104-116)
7: "Cycling Recycle (サイクリング リサイクル)" by Kirin (eps 117-141)
8: "Eien ni (永遠に)" by AFROMANIA (eps 142-154)
9: "Kurutto, Mawatte, Ikkaiten (くるっと・まわって・いっかいてん)" by KIGURUMI (eps 155-168)
10: "NIKONIKO CHAMP (ニコニコチャンプ)" by NON STYLE (eps 169-192)
11: "KERO Neko no TANGO (ケロ猫のタンゴ)" by Osamu Minagawa and the Hibari Children Chorus (eps 193-205)
12: "Omatase Chikyuu Icchou! (おまたせ地球一丁(ペコポンいっちょう)!)" by KERORO Shoutai (eps 206-218)
13: "Bokura no Aikotoba (僕らの合言葉)" by Natsumi Kiyoura (eps 219-244)
14: "KE, KE, KERORO no Daisakusen! (ケッケッケロロの大作戦♪)" by KERORO Shoutai (eps 245-256)
15: "Daijoubu SUPPONPON FRIEND (だいじょうぶスッポンポン・フレンド)" by Yoshio Kojima (eps 257-282)
16: "HaRERUYA!! (晴レルヤ!!)" by JAM Project (eps 283-307)
17: "Kuttsuke Hattsuke Wonderland (くっつけはっつけワンダーランド)" by Tamaki Matsumoto (eps 308-356,358)
18: "KERO! to MARCH (ケロッ!とマーチ)" by Nobuaki Kakuda and Juri Ihata (eps 357)

Episode Videos


Apr 28, 2019
This my friends is the only Mecha Anime that counts.The Laughs, the feels, the action, it truly has it all. It has guided me on theway to be a better man, and to this day I still follow the way of the frog diligently. More than an anime you'll be looking at the very essence of life. Keroro Gunsou is more worthy of an oscar than Leonardo F* Dicaprio. Truly a work of art. I am NOT kidding, this is ART in its purest form, the Joconde ? pff, ridiculous... Watch it, and next time someone at a fancy art gallerie asks you 'so, what's ...
May 13, 2021
[Content warnings for Sgt. Frog: General anime pervy-ness, nothing too major. An adult frog alien has a crush on a 14-year old human girl, if that's bothersome. Mostly for comedy though.]

Overall: 10/10
Usually I would base my overall rating off of the mean score of each aspect provided, but I love this anime way too much to give it anything lower than a 10. This was the first anime I ever watched as a kid, and it's the only anime that still makes me laugh out loud every time I watch it. Definitely the funniest anime I've ever seen without exaggeration. It's definitely not for everyone, ...
Nov 23, 2021
Keroro Gunso.
What in space can I possibly say about Keroro Gunso?

I'll start by saying that there's not one character that I dislike in this whole series. Even ones I didn't warm to at first eventually have episodes that make me not just like, but adore them. And boy, does this show have a huge cast of main, secondary, and minute characters, all of whom are bursting with charm.
When I finished episode 358 -- yes, I watched every single one, my longest anime to date! -- my upper lip wobbled and my eyes genuinely filled with tears. Keroro Gunso is like watching a ...

Interest Stacks

50 Entries · 9 Restacks
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Recent News

New 'Keroro Gunsou' Anime Project Announced

New 'Keroro Gunsou' Anime Project Announced

A new anime project for the Keroro Gunsou (Sgt. Frog) anime series was announced by Bandai Namco Pictures on Monday. The animation studio also opened an official more

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Recent Forum Discussion

Poll: Keroro Gunsou Episode 42 Discussion
neji64plms - Aug 18, 2011
1 repliesby WingWint457 »»
Apr 1, 8:46 AM
Poll: Keroro Gunsou Episode 3 Discussion
giraffesyo - Jul 22, 2012
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Nov 19, 2023 11:21 AM
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Aug 28, 2023 7:18 PM
Poll: Keroro Gunsou Episode 32 Discussion
nyanbinary - May 2, 2020
1 repliesby Ashhk »»
Aug 11, 2023 11:43 PM
Poll: Keroro Gunsou Episode 31 Discussion
nyanbinary - May 2, 2020
2 repliesby Ashhk »»
Aug 11, 2023 12:00 PM

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