Survivor

A survivor, he seems to be one of the scientists of Vault 106, as he is wearing a white lab coat. He is a hostile NPC and started to attack me right away. While fighting him a hallucination starts and your childhood bully, Butch DeLoria, and 2 of his friends started attacking. I only had to hit each of the 3 guys once each before they disappeared. When the hallucination stopped I was right where I had left off with fighting the survivor again.

You can take his lab coat which gives a +5 Science bonus to your stats.