Murphy (Fallout 3)

Murphy is a ghoul scientist stationed just inside Northwest Seneca Station. He has an assistant named Barrett, who acts mostly as a bodyguard.

Unmarked quest: Murphy's Bombing Run
Murphy is working on an improved version of the drug Jet, known as Ultrajet. However, he needs your help with one of the ingredients: Sugar Bombs.

Appearances
Murphy appears only in Fallout 3.

Bugs

 * Sometimes it will take a few seconds for the game to register that you've given Murphy any or all of your Sugar Bombs. You'll say "Here's all the Sugar Bombs I've got." but you won't receive any caps nor will they be removed from your inventory. Trying this a few times, as well as waiting for up to 30 seconds before speaking to Murphy again, seems to get it to work. (confirmed all platforms)
 * Sometimes it may seem that Murphy has completely disappeared. This is rare, but sometimes he is standing right next to the door of their little laboratory, and when you open it he can get pinned behind the door. This can be fixed by simply closing the door again. (unconfirmed)
 * Occasionally, Murphy and his partner will randomly turn hostile against your followers, though not towards you, unless you attempt to assist your follower. (Confirmed on the XBox 360 with Fawkes & RL-3)