Survivor

The Survivor is a hostile NPC encountered in Fallout 3's Vault 106. He wears a Vault Lab Uniform, carries a Baseball Bat, and has noticeably more health than a standard human NPC (about 4 times as much health as a basic mid-level Raider).

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.