Because you like Bill Cipher in Gravity Falls

Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.

T'Challa is a regal superhero with the weight of the world (and particularly his nation) on his shoulders. See them in Marvel Cinematic Universe.

This elf loves smiling, eating sugar, and spreading Christmas cheer. And no matter what, Buddy always sees the best in people. See them in Elf.

Chef is a swinging bachelor and former R&B singer with a leopard-skin upholstered couch and some great stories. See them in South Park.

Ciri had a princess upbringing, and some of the facts of common people's lives are a mystery to her. See them in The Witcher.

Newt Scamander is more comfortable with animals than people, even if the animals are super-dangerous magical creatures. See them in Fantastic Beasts and Where To Find Them.

Maurice Moss is a dedicated IT guy who even talks like a computer. See them in The IT Crowd.

Sweet, reserved, and intellectual, Cordelia Foxx would do anything for her students. See them in American Horror Story.

Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.

Rogue's touch is literally deadly, and she's trying to learn from the older mutants how to manager her powers. See them in X-Men Series.

Terry Jeffords (and his muscles) may look ferocious, but inside he's just a caring mama hen. See them in Brooklyn Nine-Nine.

Jeff Winger thinks he's too cool for school, which is a problem because he just enrolled in community college. See them in Community.