Vlakro

Vlakro Nuva is supposedly the eighth member of the Toa Nuva.

Biography
The Great Beings had sensed the return of the Makuta, though peace had return to the universe and on the recreated Spherus Magna. So, they sent a message to Toa Tahu Nuva in his dreams, explaining that he and the rest of the Toa travel to a land on Spherus Magna, home to the Re-Matoran (Matoran of Time). When the Toa Nuva got there, they had met with Vlakro, who was a Re-Matoran at that time. The Toa Nuva told him their tale and Vlakro told them that he had several dreams where a mysterious figure told him that his destiny was with the Toa Nuva. So, Vlakro and the Toa Nuva left the home of the Re-Matoran, Re-Koro. The group then journeyed back to the Toa Nuva's home, only Vlakro was kidnapped by Bone Hunters. However, the Bone Hunters were then defeated by a mysterious figure. What happened to Vlakro next was unclear.

Toa Nuva
Vlakro awoke on a beach after resembling himself. However, he noticed that he was stronger and taller. He also realized that his armor was similar to the Toa Nuva. He then looked at a reflection of himself in a pond and saw that his Kanohi was the Kanohi Rode, the Mask of Truth (Vlakro was an honest being as Matoran). He then journeyed to the new Ta-Koro of Spherus Magna, where he met Tahu. Vlakro and Tahu recognized each other, and Tahu showed Vlakro to the other Toa Nuva, the Turaga (Vakama, Nokama, Nuju, Matau, Whenua, and Onewa), Takanuva, and Gresh. Vlakro also saw his old friend Krivos and both were pleased to see each other again.

Vlakro then battled several evil Rahi. He was devastated when unidentified servants of the Makuta attacked the new Ta-Koro and when they had kidnapped Krivos. Vlakro went looking for Krivos, despite the Toa Nuva's warnings about the Rahi.

Mutaka
When Vlakro went out to look for Krivos, he was attacked by a horrifying being. Tahu had secretly followed Vlakro in order to stop him and attacked the horrifying being. The being revealed himself as Krivos, though he was evil. He had turned into a Mutaka when the Makuta used the Mask of Amalgam on Krivos, turning him into a dangerous demon, and forced him to serve him against his will. Krivos, who worn the Mask of Amalgam under his original mask, sent a beam of mutation toxin at Tahu. Vlakro, however, jumped in the way of the beam and was hit instead. Krivos fled, and Vlakro had transformed into a Mutaka. Tahu was shocked at this, brought Vlakro to the new Ga-Koro, and explained to the Turaga, Glatorian, and the other Toa Nuva what happened. Vlakro's weapons also mutated (the Rotar Blades becoming him swords, and the Scorpion Claw becoming a Skrall sword).

Vlakro then went after Krivos, hoping to restore his old friend. He then met Krivos and and both fought. The battle ended when Vlakro stabbed Krivos in the chest with lower sword, supposedly "killing" Krivos. This had made Vlakro upset, since he never meant to kill his old friend (also because Krivos became evil against his own will).