Strawbatty = Ichigoumori = Ichigo (strawberry) + Koumori (bat)

Cherrodent = Cheriimausu = Cherry (cherry) + Mausu (mouse) (Yeah, they're both in English, but CherryMouse was boring.)

Tomatoink = Tomaton = Tomato (tomato) + Ton (pig, and the sound pigs make in Japan)

Lotus Eater = Bakuhasu = Baku (tapir) + Hasu (lotus)

A tapir, for those not in the know, is a weird pig/anteater thing. Since it looks more like an anteater than anything (and most people probably haven't heard of a tapir), we combined anteater + lotus to come up with Lotus Eater. Plus, we just couldn't pass up the opportunity to throw in some allusion to the Odyssey, and make the show look slightly more intelligent. To learn more about tapirs, visit this page.