Survivor

The Survivor is a hostile NPC encountered in Fallout 3's Vault 106.

He/she appears to be a scientist of Vault 106, evidenced by his/her Vault Lab Uniform. While fighting him/her a hallucination starts in which you are attacked by your childhood bully, Butch DeLoria, and two of his friends. When low on health, the Survivor will use a Stealth Boy causing you to miss any shots taken in V.A.T.S.