Because you like Buddy Pine / Syndrome in The Incredibles
Krusty The Clown somehow makes life sillier and more somber at the same time. See them in The Simpsons.
Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.
Chuckie Finster is a baby afraid of everything from clowns to closets, unless his best friend's by his side. See them in Rugrats.
A majestic ruler, Mufasa is respected throughout the animal kingdom. See them in The Lion King.
Billy Batson is a troublemaking teen grappling with a pretty weird superhero identity crisis See them in DC Extended Universe.
The Grinch's heart is just too small to appreciate Christmas. See them in Dr. Seuss' How the Grinch Stole Christmas.
For Wreck It Ralph, it's not easy being the bad guy. Especially when you've been designed to destroy but really desire love. See them in Wreck-It Ralph.
Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.
Baloo is a fun-lovin' bear who just needs the bare necessities of life See them in The Jungle Book.
This master marksman may be a villain, but Deadshot's motives aren't quite as selfish as they seem. See them in DC Extended Universe.