Robert Joseph MacCready

Robert Joseph MacCready is the mayor of the Little Lamplight children's settlement in Fallout 3. He is armed with an assault rifle and threatens to "blow your fuckin' head off" when the Lone Wanderer and MacCready first meet. Despite his threat, when provoked he will run away shouting, "Every man for himself!"

Biography
MacCready came into office in 2274. He is often referred to as RJ by other residents of Little Lamplight such as Princess and Eclair.

Rise to power
MacCready came to power shortly after the five-minute rule of Princess. According to Sammy, when Princess demanded the title of Mayor to be changed to Princess, MacCready punched her in the nose and said that the children of Lamplight needed a leader, not a princess. He was then elected to Mayor.

Trade deal
Lucy directs you to talk to MacCready if you want to trade for some Cave Fungus, which is a radiation medicine and food. MacCready will make you a deal to trade it for Buffout or Strange Meat if you have the Child At Heart perk, a high enough Barter skill (at least 50 to trade in 3 Buffout or 3 Strange Meat for 1 Cave Fungus, at least 70 to trade in 2 Buffout or 2 Strange Meat for 1 Cave Fungus), or you can intimidate him into giving you his private stash of 10 fungi by passing a speech challenge. (You will lose karma for this option, and he states that you shouldn't expect any good will in town after that, and he no longer discusses trading for more and none of the other occupants will trade with you.)

Related quests

 * Picking up the Trail
 * Rescue from Paradise

Bugs
Mayor MacCready is prone to disappearing when you need him to continue a questline. Others have reported that he tends to wander into obscure and dark corners. He may appear near the front gate if you go outside and fast travel back to town. It may take a great deal of time to find him again (if you can at all) without resorting to the command console on the PC. The relevant PC console command is player.moveto 0000313B

While this may or may not be a "bug", it is advised that you get him to open the back gate during your first conversation with him, so seeking him out a second time is not required.

There have been some reports that sometimes MacCready will not give you the option to open the gate, even if you are at that point and have followed the advice outlined in this wiki. One way to make sure that this does not befall you is to click all of the grayed out speech options when speaking to MacCready. The dialog option to open the gate comes after a line that is often grayed/dimmed.

Trivia
"RJ MacCready" is also the name of the main character/hero, played by Kurt Russell, in John Carpenter's "The Thing." In the film, he also takes leadership of his group being there is no other option, and (much like his confrontation with Princess) personally punched out someone causing a problem

His personality resembles another character called MacReady who is also a mayor in the horror movie "Slither".

MacCready's physical appearance is that of the kid at the end of Mad Max Beyond Thunderdome. The kid is the son of The Gyro Captain from Road Warrior. Father, son, and the kids from the airplane crash site all fly off in his odd looking airplane. The quote "I'll blow your fucking head off" is exactly what the kid tells Mad Max and friends when he is "robbing" them.