Keroro, Super Hero! / Keroro, Invasion in a Blink!
After Keroro is mistaken for a superhero, he lives up to the misconception, becoming the neighborhood do-gooder... until his heroism clashes with an invading flying tank that Keroro designed himself! Later, another invasion plan goes awry, trapping the Keroro Platoon in a state of frozen time. Source: crunchyroll
Aired 14/08/2010EP 327 - Keroro, Super Hero! / Keroro, Invasion in a Blink!
Sgt. Frog
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.
(Source: Anime News Network)