Keroro, Red Light of Fear / Keroro, Invasion Plus Minus
Keroro and the platoon torment the Hinata siblings with stoplights planted throughout the house. Later, Keroro is addicted to an invasion simulation video game that may show him how to do it in real life. Source: crunchyroll
Aired 06/11/2010EP 339 - Keroro, Red Light of Fear / Keroro, Invasion Plus Minus
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)