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.

This B list film is notable for its excessive use of stock footage and its poor quality. Some footage comes from other New Horizons films such as Lords of the Deep, Crime Zone, Battletruck, Battle Beyond the Stars, Wheels of Fire and Dune Warriors.

The Concorde theatrical release was filmed in Peru and was later cut up for the VHS release.