Chiroro is the best friend, twin sister to Karara and daughter to Dobaba. She first appears as a fellow ninja with Karara in order to impress Dororo. Her body is light yellow with white headgear, she still has her tadpole tail and has a no entry sign in her belly and forehead.  (from Wikipedia)

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. <br>
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(Source: Anime News Network)

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