Mobians (or Mobo-Sapiens) were mutated, evolved descendants of the former animal kingdom of Earth, existing on the planet Mobius. They were created as a bi-product of the Xorda's Gene Bombs, which lead to the mutation of the planet's inhabitants; however, some animals, such as Sonic's pet dog Muttski, seem to have retained their original forms. Unlike their Overlander cousins, Mobians tend to be far more open and accepting of other species on the planet.