Mother

"Mother" was the name which Charlie used to refer to the Reetou who created him. It had sneaked into the SGC through the stargate and spied on Jack O'Neill for weeks before deciding that he could be trusted. Mother then sent Charlie to talk with O'Neill, while it waited in the room with him. It was initially hesitant to allow the other personnel on the base to talk to the boy, but O'Neill told it that the rest of his team were trustworthy. After losing patience with the humans' disbelief that an invisible creature such as it could exist, it fired its multiphasic blaster to destroy a computer. The Tok'ra were called in and detected Mother with Transphase Eradication Rods, but they were convinced not to fire in time. When the Reetou rebels invaded the SGC, Mother killed one with its blaster but was then killed by another rebel, to the sorrow of Charlie.