While the Forty Thieves are chummy with Aladdin and have adopted a Never Hurt an Innocent rule under Cassim's leadership, they're still a band of barely restrained, dangerous, and amoral criminals, and when Aladdin defeats Sa'luk and takes his place, they make it adamantly clear that he's in the gang for life. After the majority are captured in the third act, it only takes a minor speech and a beating from Sa'luk to convince the remaining thieves to return to their murderous ways.
The "Are You in Or Out?" musical number really stands out. Sa'Luk is flashing cocky Slasher Smiles and menacing Death Glares to get his comrades in line, at one point using his Wolverine Claws to slice through a tent three of them are inside. Once he succeeds in reminding the others of how fun pure evil can be, they start adopting menacing expressions and singing lines like "In turmoil and torture we trust!" The end of the song has Sa'Luk and three others looking positively demonic as their smirking faces are viewed from the other side of a fire as they sing the chorus one last time. The final shot is a Fade Around the Eyes of Sa'Luk's eyes and Slasher Smile.
During the bridge of "Welcome to the Forty Thieves", several members of the gang approach Aladdin, Iago and Abu with their swords, singing "As an honorary member of the gang that no one alive ever leaves..." they surround Aladdin and shake their swords menacingly. As if they needed to remind Aladdin that he's in for good and that bad things will happen...
The Gang Initiation Fight between Aladdin and Sa'luk is very intense. Al is unarmed until Sa'luk slashes his arm with his Wolverine Claws (the injury itself is not shown, though Al yells in agony as Abu, Iago, and Cassim watch in horror), which prompts Al to finally take out his father's dagger.
Early previews show shots of Aladdin's sleeve stained with blood during the 40 Thieves' song immediately afterwards, though this was edited out by the time of its release.
The Marvel Comics adaptation actually does show a visible injury, albeit from a distance, as Aladdin gasps that he's bleeding. Sa'luk merely laughs, expressing disbelief that the King of Thieves' son cringes at the sight of blood, before assuring Aladdin that he definitely won't enjoy what's coming next.
In general, Sa'luk's character is quite off-putting, particularly when he survives his Disney Villain Death and kills a shark onscreen. It's not made clear precisely how he did it, but it was still trying to breathe after he beached it, then it just gives up and dies. Proves that while he may not have any magical powers like Jafar, Sa'luk is still without a doubt, a terrifying threat! (Especially his knuckleduster that can rip his foes to shreds).
The eerie whale song noise the Vanishing Isle's turtle emits.
Sa'luk's death. After Cassim throws the Hand of Midas, Saluk grabs it... completely. This turns him into solid gold with a hellish, muffled scream, causing him to drop into the water.
Saluk: What are you [two] staring at?! (the hand begins to glow in his grip, increasingly covering Saluk)No.NO! NO!! No! NOOOO!! AAAAHHHHhhhh-
His muffled scream while this happens echoes as if it's inside metal. Therefore, the curse even turned his innards, namely his lungs into solid gold as well.
actually does show a visible injury, albeit from a distance, as Aladdin gasps that he's bleeding. Sa'luk merely laughs, expressing disbelief that the King of Thieves' son cringes at the sight of blood, before assuring Aladdin that he definitely won't enjoy what's coming next.