Biff

Biff is the brother of the slaughterhouse owner Grisham in Modoc and the uncle of Miria and Davin, in 2241.

Background
Biff is presumably a farmer in Modoc, since the whole town's economy relies on farming. However, Biff does not appear unless his brother Grisham dies (see Interactions) and has limited dialogue options, making it impossible to determine his true background.

Interactions with the player character
If Grisham has been killed and The Chosen One sleeps with either of his children, Miria or Davin, Uncle Biff appears to deliver the same shotgun wedding ultimatum offered by Grisham when he is alive.

Appearances
Biff appears in Fallout 2.