"There are two main tribes in Chaotic. There is the OverWorld, ruled by Maxxor and the UnderWorld, ruled by Chaor. The OverWorlders are generally anthromorphically mammalian and bird-like in appearance but also include creatures which resemble other animals, an example being Slurhk, who resembles a scorpion. The UnderWorlders are generally made up of various creatures which includes different animals such as Takinom (a demon-like gargoyle) and Agitos (a serpent-like lion)."
Source: Wikipedia, "Chaotic", available under the CC-BY-SA License.