A gladiatorial arena was located on the planet Rattatak. In 23 BBY, the warlord Osika Kirske led Asajj Ventress into a trap when she attempted to kill him, using himself as bait. Ventress was captured and forced to fight in the arena. During one of Ventress' fights, the Sith Lord Dooku visited the arena in search of an assassin, watching Ventress from Kirske's viewing gallery. Choosing to take Ventress as his Sith apprentice, Dooku used his lightsaber to behead Kirske, killing the warlord.