Infinity Helios (Original version Helios (ヘリオス Heriosu)) is the evolution of Helios MK2 that appears in Bakugan: Mechtanium Surge as the Guardian Bakugan of Spectra Phantom. His Attribute changed from Pyrus to Darkus during the process of his evolution. His BakuNano is Bombaplode and his Mechtogan is Slynix. His Battle Suit is Doomtronic. Aside from that he is one of the few Bakugan that have the ability to mutate, with his partners being Titanium Dragonoid and Taylean.