Feznor is a knight of the Knights of the Crux Ansata, found on the fourth level of the Abyss in Ultima Underworld I. Feznor revealed himself to the Avatar as very knowledgeable about the various puzzles found on their level of the Abyss, the bullfrog puzzle, the maze of Silas, the door of precious levers and the water area. He gave the Avatar detailed information about all four puzzle areas - information that the Avatar put to great use to solve these areas and get some impressive loot out of it.