Sgt. Frog Episode 94: Karara & Taruru receives Pecopon!
Episode 94 of 358 of Sgt. Frog, aired January 27, 2006, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Karara and Taruru show up to visit the other frogs! And, having nothing else to do, they decide to invade Earth, as well. Oh, and let`s not forget that Karara still has a crush on Kululu! Source: crunchyroll