Not much is known about Auragan's past, except that he used to be a very adventurous Po-Matoran, who wore a dark green Huna. It is also unknown how he became a Toa, though it is known that the day it happened, two Toa, one gold (toa of lightning) and the other silver (Toa of sound) who found the corpse of a Po-Matoran, who wore a dark green Huna, mysteriously died. It is believed that Auragan was the Po-Matoran that was found by the two Toa, and that the Toa who died gave their power to him, thus turning his body into that of a Toa.