Sgt Frog Song

      Opening Theme:

#01: "KERO! to MARCH" by Nobuaki Kakuda and Juri Ihata (eps 1-51)

#02: "Zenkoku Musekinin Jidai" by GAGAGA SP (eps 52-78)

#03: "Kimi ni JUICE wo Katte Ageru" by GROUP Tamashii (eps 79-103)

#04: "Hareru Michi ~ Uchuujin (Omeera) Awaseru Kao ga nee!~" by JK (eps 104-129)

#05: "You-You-You" by POLYSICS (eps 130-154)

#06: "Kaettekita KERO! to MARCH" by Ichirou Zaitsu and Yuko Ogura (eps 155-183)

#07: "FUNDARI- KETTARI-" by DYLAN AND CATHERINE (eps 184-205)

#08: "Nante Suteki na Doyoubi" by KERORO Shoutai (eps 206-)

#09: "HELLO DARWIN! ~Koukishin ON DEMAND~" by JAM Project (eps 232-256)

#10: "KERO! to MARCH (Shoutai Version)" by KERORO Shoutai (eps 257-)

Ending Theme:

#01: "AFRO Gunsou" by DANCE MAN (eps 1-18)

#02: "PEKOPON Shinryaku Ondo" by ONDO GIRL meets KERORO Shoutai (eps 19-26)

#03: "AFRO Gunsou" by DANCE MAN (eps 27-40)

#04: "KERORO Shoutai Kounin! Netsuretsu Kangeiteki Ekaki Uta!!" by KERORO ALLSTARS (eps 41-51)

#05: "Katte ni SHINRYAKUSHA" by Naoya Ogawa and Mayuko Iwasa (eps 52-78)

#06: "KOKORO no Mondai" by toutou (eps 79-103)

#07: "Shouri no Hanabira" by Chinatouchable (eps 104-116)

#08: "Cycling Recycle" by Kirin (eps 117-141)

#09: "Eien ni" by AFROMANIA (eps 142-154)

#10: "Kurutto, Mawatte, Ikkaiten" by KIGURUMI (eps 155-168)

#11: "NIKONIKO CHAMP" by NON STYLE (eps 169-192)

#12: "KERO Neko no TANGO" by Osamu Minagawa and the Hibari Children Chorus (eps 193-205)

#13: "Omatase Chikyuu Icchou!" by KERORO Shoutai (eps 206-218)

#14: "Bokura no Aikotoba" by Natsumi Kiyoura (eps 219-244)

#15: "KE, KE, KERORO no Daisakusen!" by KERORO Shoutai (eps 245-256)

#16: "Daijoubu SUPPONPON FRIEND" by Yoshio Kojima (eps 257-282)

#17: "HaRERUYA!!" (Hallelujah!!) by JAM Project (eps 283-307)

#18: "Kuttsuke Hattsuke Wonderland" by Tamaki Matsumoto (eps 308-)

ケロロ軍曹

ケロロ軍曹
(Keroro Gunsō)

Sgt. Frog, known in Japan as Keroro Gunso (ケロロ軍曹 Keroro Gunsō, Sergeant Keroro), is a manga series by Mine Yoshizaki. It was later serialized into a TVanime series directed by Junichi Sato. Both the anime and manga are comedies that follow 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 he is captured while trying to hide in one of the family member's bedrooms. In both the manga and anime, Keroro is forced to do meaningless chores and errands for the family after his army abandons his platoon on Earth. The platoon has many failed attempts at taking over Earth.

The series takes its comedy from a combination of wordplay (particularly puns and homophones), physical humor, situational irony, breaking of the fourth wall, and numerous pop culture references (especially to Gundam, Kamen Rider, Space Battleship Yamato, Dragon Ball, and Neon Genesis Evangelion and many others). Various anime, games, manga, and other aspects of pop culture are parodied/referenced throughout the series as a bonus to older viewers. Both the manga and the anime are laden with pop-culture references, and even in the same story the references often vary wildly. The anime does not explicitly refer to Evangelion or other animations to which Bandai does not hold the copyrights, but only recreates the "feel" of famous scenes from these anime. The anime is much more detailed and direct in its Gundam references, however, since Bandai does hold rights to the Gundam franchise.

Shortly Keroro is a frog-like alien sent from his home planet on a mission to conquer Earth. But when his cover is blown, his battalion abandons him and he ends up in the home of the Hinata family. 

There, he's forced to do household chores and sleep in a dark basement that was once supposedly a prison cell haunted by the ghost of an innocent girl. He even spends his free time assembling Gundam model kits. 

During his stay, Keroro meets up with subordinates who were also stranded during their failed invasion.