Balunia was once a world with a clean atmosphere, until the native Balunian humanoids contaminated it through pollution. Eventually, the natives of the planet were forced to leave their world. The Krim family traveled to Earth to make it their home, since it's atmosphere was relatively clean. Nevertheless, because of the pollution that occurs on Earth, Krim has voiced his fears to the Super Friends that one day Earth may become just like Balunia.
- As seen in The Balloon People.