Wiggum

Wiggum was one of the four psykers, along with Gideon, Lucy, and Moore, that was kept behind a forcefield in the Master's Lair beneath the Cathedral. Presumably, he was one of the Master's failed experiments in trying to awaken psychic powers in humans. Wiggum, while seemingly not as insane as other psykers, he was quite clearly depressive. Described as a complete loser, he was wearing a Psychic Nullifier when the Vault Dweller encountered him. It can be assumed that Wiggum died with the destruction of the Cathedral.

According to the Fallout Bible 3 by Chris Avellone, Wiggum was an electrokinetic-dominant psyker. These powers were apparently suppressed when Wiggum was fitted with a psychic nullifier.

Appearances
Wiggum only appears in Fallout.