Because you like Gomez Addams in The Addams Family
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.
Dash Parr's super speed helps with his impatience. See them in The Incredibles.
A karate master/rocket scientist/squirrel, Sandy Cheeks is the only one who can clean up the other resident's messes in Bikini Bottom. See them in SpongeBob SquarePants.
Milo Thatch is an enthusiastic researcher without cynicism. See them in Atlantis: The Lost Empire.
Mother Gothel is a great mother as long as you never, ever, break the rules. See them in Tangled.
Alfredo Linguini can whip up five star meals effortlessly. Just don't look under his hat. See them in Ratatouille.
Nala is a strong lioness who's loyal to her friends. See them in The Lion King.
Aladdin is a street-thief who is on his way up. Way, way up! See them in Aladdin.
A stylish agent, Agent J would rather improvise than play by the rules. See them in Men in Black.
The Ice King is lonely and looking for a princess to sweep him off his feet. See them in Adventure Time.
Chuckie Finster is a baby afraid of everything from clowns to closets, unless his best friend's by his side. See them in Rugrats.
Jacob Kowalski is just a baker caught up in an otherworldly adventure. See them in Fantastic Beasts and Where To Find Them.