|Voiced by:||William Morgan Sheppard|
Merlin was an all-powerful wizard of medieval times, having close ties with King Arthur.
After Jason Blood betrayed Arthur for his love, Morgaine Le Fay by opening the gates of Camelot, Merlin cursed Jason with a bond to the demon, Etrigan. Merlin, before his death, also hid the Philosopher's Stone in an ark (a stone crypt of sorts).
- "The Demon Within" (Mentioned Only)