Because you like Ben Barber in Ride Along
Linda Belcher doesn't prescribe to what society deems as "normal." She narrates her life through song, much to the alarm of everyone nearby. See them in Bob's Burgers.
R2-D2 has been in the galaxy saving business for decades. Not bad for somebody whose vocabulary is limited to "beep-boop." See them in Star Wars Series.
Will Byers is just like any other twelve year old, except he's stuck in another dimension. See them in Stranger Things.
Matilda Wormwood is so smart, she taught herself how to be psychic. See them in Matilda.
Queenie Goldstein is beautiful, kind, and probably currently reading your mind. See them in Fantastic Beasts and Where To Find Them.
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.
Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.
A self-proclaimed diva, Mercedes Jones is on the hunt for a stage worthy of her talents. See them in Glee.
Lucille Bluth doesn't understand the question, and she won't respond to it. And you're probably better off. See them in Arrested Development.