Pappy

Pappy is an pessemistic NPC who lives in Big Town. He claims to have come from Little Lamplight with his girlfriend Bittercup and the others hoping to find Big Town, a nice town with plenty of food and protection. Bittercup broke up with him when they found Big Town to be a shoddy bunch of houses and junk organized into a fortress that was constantly under attack by raiders and super mutants.

Pappy is the only NPC in Big Town who can repair the players items.

Bugs
When talking to Pappy, the easy speech check "I heard you came here with Bittercup" dialogue option will never disappear, giving the player a chance to earn unlimited experience and an easy way to earn the "Silver Tongued Devil" achievement, and infinite EXP, on the XBOX 360. This has since been fixed (At least on the PS3).