Harold
A young man who went by the name of Harold used to be a Fantasmic Kingdom role-player, and best remembered as Jafar for a long while. He role-played as other characters, too, including Belle and more obscure characters (but only briefly), such as Basil, Dreamfinder and even the Mad Hatter. But Jafar was Harold's top character, and constantly transformed people. For example, he once transformed Briar Rose (then role-played by Macabri) into a white werewolf. Jafar and Merlin were rivals, as well.
It is a little unclear why he left. One could just assume that his life grew busy. At any rate, Naomi has taken over as Jafar.