Carol (Fallout 3)

Carol is a ghoul hotel proprietor residing in the Underworld. She is Gob's "mother", although Ghouls don't give birth. He is like a son to her. You can rent a room for 120 caps, and listen to a long story about her life. She is more than 200 years old.

Trivia
Carol is seemingly lesbian as she sleeps in the same bed with Greta, whom she calls "Darling" and such other names.