Brother Septimus

Brother Septimus was the antagonist from the Are You Afraid of the Dark? episode "The Tale of the Carved Stone".

For ages, Septimus had been searching for the Amulet of Ankhra. He eventually tracked it down all the way to Mr. Sardo's magic shop. But Sardo had sold it to Allison Denny, a girl who had just moved in and was without any friends. Septimus showed up at Allison's house and tried to mesmerize her into giving it to him. But Allison backed off on impulse and went right through the mirror to another time.

Trivia

 * Septimus was portrayed by Frank Gorshin, who voiced Lysander and Marius in Diablo II.