Sanctuary Beast

The Beast was a creature that was overtime created by the People of the Cloister.

Overview
The beast inhabits the Cloister Planet and seems to represent the fear of the inhabitants there. It has the capability to become invisible, and even when visible, it is barely noticeable, where it looks as if it was a ghost-like figure. The beast could become invisible, where it could not be killed, or even injured, as objects such as swords and bullets pass right through it, but is more than capable of injuring, or even killing someone. Due to the creature's strength, it could throw its victims for several feet.

History
For generations, the beast terrorised the people of the Cloister, but doesn't usually attack the village. It wasfirst encountered by the Atlantis Expedition when Lt. Col. John Sheppard became sucked into the portal to the Cloister. He saved Avrid from certain doom, but couldn't be able to kill it with his weapons. He had somehow beat him, but couldn't remember what he did. Since the natives were afraid of the beast, Sheppard persuaded them to fight the beast. Eventually, they confronted the beast, surrounded it and vanquished it with their minds, before they could ascend.