Ryuga

Ryuuga (竜牙, Ryuuga) is a fictional character in the Metal Fight Beyblade metaseries created by Adachi Takafumi. Ryuuga is one of the villain characters from the Metal Fight Beyblade anime, and manga series.

Overview
He owns the mystical L.Drago 105F and is Ginga's ultimate rival. Coincidentally, he keeps his beyblade on his arm with something shaped like a dragon from the Asian legends. He is part of the Dark Nebula organization, where he is seriously worshipped by all the followers.

Ryuuga is the reason Ginga's father, Ryuusei, died. With the Dark Nebula, he attacked the town Ginga lived in. After defeating Ryuusei in a battle with his L Drago, rocks fell from the volcano on top Ginga's father. This is why Ginga hates Ryuuga so much, while the latter just seems to take pleasure in terrorizing bladers.