Earth to Flain is the 20th episode of Tenkai Mixels.
Summary
Bored Flain decides to visit Earth for one day. But he ends up getting Guren into trouble while he tries to fit in with the other human kids and do other things that no Mixel and other humans do. Worst of all, Guren has to keep his Infernite friend a secret from his dad just so Flain can return to the Mixel world.