Hassan was a wealthy and power hungry merchant who attempted to usurp The Sultan.
Although an ordinary man, he briefly acquired almost unlimited magical transmutation powers after stealing the Sultan's Mystic Blue Diamond Ring and combining it with Zoran's wand, allowing him to transform anything into whatever he desired.
Hassan was an incredibly wealthy and famous merchant who had moved into Agrabah and became the talk of the town. He then invited the Sultan, his acquaintances and supposedly all of the elite in Agrabah to a private dinner party he was hosting. Upon arriving, The Sultan, Aladdin, Jasmine, Abu and Iago were surprised to find that they were the only guests, to which Hassan admitted that he wanted this to be a really private affair. He then kept asking the Sultan about his Mystical Blue Diamond Ring throughout the party, almost obsessively so. He then introduced the absent minded sorcerer Zoran who would serve as their entertainment. Iago and Abu having grown bored with the party and the lack of food they were being given decided to raid the kitchen for a real meal. While they were happily gorging, they happened to stumble upon a private conversation between Hassan and Zoran who had briefly left the party, where Iago overheard them discussing their evil plan to steal the Sultan's magical ring and use it to enhance Zoran's wand which would allow the duo to take over Agrabah and possibly beyond.