Titan Nillious (タイタン・ニリアス,Taitan Niriasu?) is a Hydra/Dragon hybrid Bakugan that appears in Bakugan: Battle Planet. He is the Guardian Bakugan of Magnus Black. He is the evolved form of Hyper Nillious.
The double-headed Nillious main motive in brawls is to kill - not to win. He does not like fighting as a team with his partner, Nillious is out to satisfy only himself. He likes to go rogue. Each head has its own personality & ability. Untamable & vicious, Magnus has his hands full keeping Nillious in line.
Bakugan: Battle Planet
Titan Nillious is the first super evolved Bakugan seen in Battle Planet.
Titan Nillious is the first evolved Bakugan to gain two physical beings in Battle Planet. Preyas II also has two forms that it switches between, and it was the first Bakugan to do so, making Titan Nillious the second.