Scar.

About Scar

Scar is a fictional character and the main antagonist in Disney's The Lion King franchise. He was created by screenwriters Irene Mecchi, Jonathan Roberts and Linda Woolverton, and animated by Andreas Deja. Scar is introduced in the first film as the ruthless, power-hungry younger brother of Mufasa, ruler of the Pride Lands. Originally first in line to Mufasa's throne until he is suddenly replaced by Mufasa's son Simba, Scar decides to lead an army of hyenas in his plot to take the throne by killing Mufasa and exiling Simba, ultimately blaming his brother's death on his nephew.