Tanma was the leader of the Av-Matoran survivors following the capture of Kirop by the Makuta. When Lewa was in physical contact with Tanma, he was able to access Tanma's memories. Tanma, in turn, was able to act as a living energy source for Lewa's skyblaster. Tanma carried two power swords and wore a rocket booster on his back which allowed him to fly. At the end of story year 2008, he was living on Metru Nui.
Tanma acted as a living source of light energy for Lewa Nuva's Skyblaster.