Ultra Warrior, also known as Welcome to Oblivion, is a post-apocalyptic 1990 film directed by Augusto Tamayo San Román and Kevin Tent. Set in a futuristic dystopia, a nuclear holocaust creates mutants who inhabit the radioactive areas. One man emerges as the leader of a group of survivors called "Muties". The main character, portrayed by Dack Rambo, is looking for zirconium which is used to make bombs to prevent aliens from destroying Earth.