Ferals, denizens of the Coruscant underworld, were creatures of diverse species. These untamed beings were the progeny of survivors who had dwelt there from the time Coruscant underwent terraforming.
A significant number were manipulated by the World Brain, and furthermore, they conducted espionage on the Bothans on behalf of Jacen Solo. Following the demise of the World Brain, the Ferals started to regain mastery over their primal urges.