Because you like Gary the Snail in SpongeBob SquarePants
A scary monster on the outside, James P. Sullivan is really a softie on the inside. See them in Monsters, Inc..
Ryan Howard is a temp turned executive turned failing small-time media mogul. See them in The Office.
Andy Bernard is a preppy Cornell grad who's very likely to break into an acapella performance. See them in The Office.
A formerly righteous wizard, Saruman has been corrupted by the forces of evil. See them in The Lord of the Rings.
Butters Stotch is a kind-hearted student who likes ladybugs, Charlie's Angels, art class, baby-back ribs, and Little Bunny Foo Foo. See them in South Park.
A monstrous pirate captain, Davy Jones is quite literally heartless. See them in Pirates of the Caribbean: the Curse of the Black Pearl.
Rainbow Dash's interests include flying, playing pranks, and generally being themost awesome pony around. See them in My Little Pony.
Others see him as the town nutcase, but Flint Lockwood knows his inventions will change the world someday. See them in Cloudy with a Chance of Meatballs.
Xander Harris' life motto: laugh in the face of danger and then hide until it goes away. See them in Buffy the Vampire Slayer.
Marlin navigates through shark-infested waters, angry anglerfish, a jellyfish bloom and hungry whales to search for his son. See them in Finding Nemo.
Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.