Because you like Sid in Ice Age
David Nolan is a noble fairy tale prince with the heart of a hero, regardless of whether he can remember his past or not. See them in Once Upon a Time.
The Ice King is lonely and looking for a princess to sweep him off his feet. See them in Adventure Time.
Khan Noonien Singh is super strong, super smart, and out for revenge. He always seems to be two steps ahead of his enemies. See them in Star Trek Into Darkness.
Sam Weir lives for the simple things in life: watching Saturday Night Live and reading comic books. See them in Freaks and Geeks.
Daniel LaRusso is a Jersey kid in L.A. who is learning about karate and life from the mysterious Mr. Miyagi. See them in The Karate Kid.
Hank McCoy is a quintessential nerdy scientist but with a few rather unconventional physical attributes. See them in X-Men Series.
Olive Hoover is an irrepressible child beauty queen (or would-be queen) who doesn't play by your rules. See them in Little Miss Sunshine.
Aslan represents everything good and just, he's just not super reliable. See them in The Chronicles of Narnia.
Born and raised in the darkness, Bane is determined to have the city totally under his control so that he can demolish it. See them in DC Extended Universe.