Cassim is a former antagonist, turned into a reformed anti-hero, and also one of the titular protagonists in the Direct-to-video, Aladdin and the King of Thieves. The father of Aladdin, Cassim abandoned his family at an early age, and became the leader of the Forty Thieves, with Sa'Luk serving as his subordinate. After many years he is confronted by his son, Aladdin, now grown into an adult, and since then he tried to make his amends. While not the person, who would escape easily from his own greed, Cassim puts his life at risk, when his son is threatened by Sa'Luk. Since then, he is dismissed as the King of the Thieves, and starts his own way of living. He makes a cameo appearance in the first Disney Villains War, although he is greatly featured in the second Disney Heroes vs. Villains War. There, he repeats his role in that of the movie, although which side he would choose is currently unknown.
Disney Villains War
Cassim briefly appears in the fight between his subordinate, Sa'Luk, and Shan Yu, ultimately looking on as Shan Yu defeats Sa'Luk in combat and takes over the Forty Thieves to his cause. He does not make another appearance, thus his fate remains currently unknown.