Doc Crocker

Crocker is human living in Diamond City in 2287.

Background
Crocker is a facial reconstruction surgeon, and is involved with The Disappearing Act as he's the culprit responsible for the disappearance. When the Sole Survivor encounters him you can convince him to tell you what happened and to turn himself in peaceably, If successful he yells that he can "Fix anything!" and injects himself with Psycho thus ending his life. The reasoning why Crocker killed Earl Sterling was he apparently failed to reconstruct Earl's face and snapped. Crocker was likely insane and a drug addict as there is psycho in the surgery room you find him in as well as him committing suicide with Psycho.

Appearances
Crocker appears only in Fallout 4.