Hades revives Aladdin's archenemy, the evil sorcerer Jafar, to destroy Hercules for him. Hades also sends Pain and Panic to destroy Aladdin and show Jafar how it's done. They also try to pit Aladdin and Hercules against each other.
When Hades figures out that there is a problem with one of the souls of the dead, he meets Jafar. However, when Hades tasks Jafar with dispatching Hercules, Jafar then asks Hades to get rid of Aladdin as well.