Orell Peattie

Orell Peattie is the central antagonist of the X-Files episode, "Theef" and is one of the show's many Monsters of The Week - as such he is not connected to the larger series mythos of alien invasion or government conspiracy but is instead a stand-alone threat to the famous FBI duo, Agents Scully and Mulder.

History
Orell was the father of  Lynette Peattie, who suffered a terrible bus accident that left her so pained that Doctor Robert Wieder gave her a lethal dose of morphine to end her suffering, however this sparked a murderous thirst for revenge by Orell, who was already a practitioner of hexcraft, a form of folk-magic similar to voodoo and focusing on the use of trinkets known as poppets, which Orell planned on using to inflict sadistic torture and pain on the entire Wieder family and anyone else that got in his way.

Abilities
Orell was a practitioner of hexcraft and as such had abilities similar to a voodoo witch-doctor, more specially the evil-aligned version of these mystics, via the use of poppets he could inflict almost any harm he could imagine on his victims.