Evil Supreme was a battle/gladiator droid that worked at Mondo-Mod the Hutt's Arena of Doom. By the time of the Clone Wars, the droid had become the champion of the Arena. When Jedi Master Luminara Unduli came to the gladiator ring looking for the location of a secret CIS factory that Mondo-Mod had gained access to, Mondo-Mod said he would give her the data, if she agreed to a challenge. The Jedi had to beat his three best fighters with out using a lightsaber or any Force powers.