Ultraman Mebius is joined once again by Ultraman, Ultra Seven, Ultraman Jack, and Ultraman Ace, as well as three later Ultramen (Tiga, Dyna, and Gaia) to fight more powerful versions of familiar Ultra Monsters.
Astro is a robotic boy created by Dr. Tenma to replace his late son. When Tenma destroys his laboratory and shuts down Astro, the Ministry of Science revives him and tries to give him a normal life as a 6th-grade student who occasionally helps keep renegade robots from causing harm.
Ultraman Zearth hails from The Land of Pikari in Nebula Z95. He has a big red face and dislikes dirt, and will go to great lengths to wash it off his hands. His goal is to clean the polluted Earth. He transforms with an electric toothbrush, which is consistent with his hygiene fixation. He's not quite adept at being a superhero, but at least he tries his best.
