Complex sentence: Mark Henn is a character animator, whose work has included several Disney leading or title characters, including Princess Jasmine in "Aladdin", Young Simba in "The Lion King" and Mulan in "Mulan".
Split into simpler sentences: Mark Henn is a character animator, whose contributions to Disney animation have included several Disney leading or title characters. His work includes Princess Jasmine in "Aladdin", Young Simba in "The Lion King" and Mulan in "Mulan".