Shan Yu

Shan Yu was the evil leader of the Huns in Mulan. He was voiced by Miguel Ferrer. He has quickly become one of Disney's most recognizable villains, placing 18th in UltimateDisney's Top Thirty Villain Countdown, and was awarded 48 out of 60 possible points at the Movie Villains Database.

Mulan
The film's opening scene sees Shan Yu scaling the Great Wall of China and leading the Huns in an invasion of China, setting the tone for the rest of the film. His armies crush the Emperor's soldiers with ease until they get to a mountain pass where they are cut off by Captain Li Shang's troops. Though the Huns vastly outnumbered Shang's troops, Mulan managed to bury them in an avalanche by aiming a rocket at a nearby mountain.

Believed to be dead and defeated, Shan Yu and a group of surviving Huns were able to infiltrate the Emperor's palace and capture him during the victory ceremony. Mulan, Shang, Yao, Ling, and Chien-Po scale the palace wall and quickly overcome the Hun guards. Just as Shan Yu moves to strike the Emperor down, Shang attacks him and Chien-Po carries the Emperor to safety. Just as the Emperor escapes, Shan Yu overpowers Shang and soon recognizes Mulan as the soldier who caused the avalanche. Mulan lures him to the palace rooftop, where he attempts to kill her, until Mushu aims a firecracker at Shan Yu, which propels him into a tower full of fireworks and presumably to his death.

Kingdom Hearts II
Shan Yu also appeared in Kingdom Hearts II, in the world based on Mulan, called The Land of Dragons. His role in the game is very similar to the role he played in the film, though he is now possessed by a Heartless and, similarly, controls an army of them as opposed to Huns. He is one of the few Disney villains in the series not to be explicitly shown as allied with Maleficent and Pete

Personality
Shan Yu is among the most ruthless, and merciless villains ever seen in the Disney universe. He proves that it is not below him to kill innocent people to prove his strength, including children. He even makes jokes about it, rhetorically asking his lead archer how many men it takes to deliver a message, to which the archer is seen drawing his bow and commenting "One", and kills one of the spies.