Wei is among a small number of surviving members of the Nimarrans, an alien species which at one point in the distant past ruled the entire Sagittarius arm of the Milky Way galaxy. After his civilization was wiped out in a failed attempt to achieve collective godhood, he was left for dead in a cryo-stasis escape pod and drifted through space for countless millennia before being recovered and thawed by a group of human space explorers.