In Epic Mickey: Power of Illusion, he is a boss. He can be found in ???, where he has kidnapped Jasmine and trapped her in a sand timer. Mizrabel claims that she has made Jafar the most powerful sorcerer in the world, and so Jafar takes on Mickey in a battle.
Once defeated by Mickey, Jafar will realize that his powers aren't living up to his expectations, and Mickey will confirm that Mizrabel has been playing tricks with his mind in order to get him working for her. Infuriated, Jafar will take Mickey's side, and set up his room.