A masked boy wielding the powerful Nillious who becomes Dan's number one rival. Magnus has no interest in fame and keeps his identity a mystery. Despite working for AAAnimus, Magnus is a strong believer in the bushido code of the samurai— though he has clearly lost his way.

Armed with a cadre of powerful Bakugan, Magnus is the best Battler out there... Except for Dan Kouzo. Magnus takes an instant dislike to Dan because it's obvious that this boy is special and his bond with his Bakugan.