Keroro Gunsou, Shinryaku! Ika Musume Recommendations
These are two similar series that are SO similar - it's almost scary. Both main protagonists, Keroro and Ika, are "invaders" from very different worlds who come here to Earth in order to invade us and claim everything in humanity for their society back home. And, both end up becoming slaves to a pair of siblings to do hard work and labor for one reason or another as soon as they arrive unto Earth. Ika - a pair of sisters. Keroro - a sister and brother. The art style and emotion art between the two is even similar. The comedy is the same between
Ika Musume is so similar to keroro, apart from the fact they both want to invade earth, it's somewhat similar kind of humour.
both the main characters want to take over the Earth. But end up being too lazy to do so.
*Both animes are very comedic and both main characters are alien-like invaders of Earth. They make many referenecs to culture and puns. Main characters are enslaved by humans but ultimately fail at trying to take over Earth.If you loved and laughed at Squid Girl you will definitely laugh at Sgt.Frog's alien invasion.