Mobian

Mobians are 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. Unlike Overlanders, Mobians tend to be far more open and accepting of other species on the planets. Mobians consist of a large variety of species from the former animal kingdom.

Xorda Attack
Prior to the Xorda attack on the planet Earth (which would become Mobius), the animal kingdom was rather primitive in comparison to the humans, which were the dominant species at the time. The use of Gene Bombs by the alien race resulted in the rapid evolution of the animal kingdom. (StH: #125, #148)

Prehistoric
Over the next few thousand years, the Monosaurs and very primitive Mobians roamed the planet surface. The Monosaurs however became all but extinct during the Coming of the Chaos Emeralds (with the exception of the Ancient Walkers), leaving the Mobians as the new dominant species of the planet. (TMS: #3)

Early Societies
The earliest Mobian society was that of the Echidnas, which adapted, learned and evolved as a much faster rate than the other Mobians. They successfully established the city of Albion thousands of years before any other Mobian city. Gradually however, the other Mobians worked together to form the city of Mobotropolis, under the wise leadership of Alexander, the first king of the Acorn lineage. (StH: #71, KtE: #12)