Super Beasts (超獣 - Chōjū) alternatively known by their Japanese name "Choju", are Monsters that made their debut in the series, Ultraman Ace, as the series's primary villains. Super Beasts are created as biological weapons from the series's main villain, Yapool, and are said to be much more stronger than average Earth Monsters. Although they were made primarily by Yapool to carry out his hatred and vengeance against the Ultras, there are some Super Beasts that exist in the Franchise who have different origins as well.