 In "Wings of Liberty", Mengsk and his son Valerian find the Dominion opposed by several rebel and paramilitary groups, including Raynor's Raiders.Mengsk suffers compound setbacks during the game, initially due to the mass invasion of Dominion space by Zerg forces, which catches the Dominion military and Mengsk unprepared, and later from Raynor's Raiders who capture and broadcast proof of Mengsk's war crimes during the events of "StarCraft".Despite these setbacks, Arcturus manages to overcome these hardships, maintaining his position as Emperor of the Dominion for the remainder of the game.