Scar (voiced by Jeremy Irons) is the main antagonist of Jaden meets The Lion King, and is Simba and The Jungle Adventure Crew's arch enemy. He wanted to rule the Pride Lands, but he had to kill both his brother, Mufasa, and his nephew, Simba, in order to be next in line. He also wanted to kill Jaden, because he saw him as a threat to his plans. Scar succeeded in killing Mufasa, and Simba ran away after he sent the hyenas to kill him. Scar took over the Pride Lands, but under his rule, the herds were droven off and a drought ocurred. Scar was defeated by Simba, when he finally learned to let go of the past, and chanllenged him to a fight.
- Scar will be one of many villains to appear in Jaden's Adventures of Fantasmic!
- Scar will become Jeffrey's enemy in Jeffrey & Friends' Adventures of The Lion King.
- Scar becomes Juniper Lee's enemy in the Juniper Lee's Adventures Series episode Animal Alcatraz.
- Jaden will first meet the Bugs and Daffy's Adventures team in Bugs and Daffy's Adventures of The Lion King. It is revealed in Bugs and Daffy' meet The Little Mermaid that Marvin the Martian reincarnated him, and since then, Scar becomes a frequent enemy of the team.
- Scar will become Sly Cooper's enemy in Sly Cooper's Adventures of The Lion King.
- Scar will become Twilight's enemy in Twilight meets The Lion King.
- Scar will appear again in Jeffrey, Jaden, Hiccup & Friends' Storm Adventures of The Lion Guard: The Rise of Scar.