Sgt. Frog Episode 115: Keroro - Nyororo VS Mecha Nyororo / Keroro - Regarding the Disposal of the Nyobo
Episode 115 of 358 of Sgt. Frog, aired June 23, 2006, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Keroro takes a stand against Nyororo`s inevitable annual dehydration attack by creating a mech version of the creature to combat it, while at the same time makes a movie about the situation for a contest. Later, Keroro adopts the refurbished mech as a pet, but Tamama`s jealousy unleashes a danger to the whole planet! Source: crunchyroll