A Demon World Beast (魔界獣 Makaijū?) is the main type of monster in Energetic Explosion Ganbaruger. They are created via a dictionary that Yaminorius III uses for the foundation of their designs and their powers. They can be further upgraded when the odds are stacked against them.
Yaminorius III gets new dictionaries from Gokuaku and new items to upgrade the beasts as time goes on. During the early episodes when Yaminorius III summons a new Demon World Beast, he starts by selecting a beast from the dictionary then he casts a seal and then summons it from the seal. Later he can turn objects into Demon World Beasts with a lamp.