Buunior is the first and strongest of two creations of Brizzard (the other being Android Infinity). He was created when Brizzard somehow managed to find and used some spare pieces of Majin flesh using the material along with highly advanced Arcosian technology, intending to design the best warrior to aid and fight alongside him in his mischievous activities of conquering the galaxies. He is the secondary antagonist of the Final Battle Saga, the primary antagonist being his own creator. He makes his debut appearance in the chapter, "Brizzard's Creation".