Because you like Butters Stotch in South Park
Leonard Hofstadter is the normal one among his scientist friends, though in fairness that's a low bar. See them in The Big Bang Theory.
The White Queen been treated horribly, but the day of her victory is almost near. See them in Alice in Wonderland.
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.
Louis de Pointe du Lac is wanting to find a way of living that doesn't make him miserable. See them in Interview with the Vampire: The Vampire Chronicles.
Haley Dunphy's interests include shopping, dating, and avoiding homework at all costs. See them in Modern Family.
A jazz musician, Sebastian Wilder is passionate about his music and his life. See them in La La Land.
David Rose likes his rose chilled, his linens pressed, and his family quiet. See them in Schitt's Creek.
With the loyalty and pluckiness of a puppy, Nana Komatsu is a hopeless romantic. See them in Nana.
Chaos is what killed the dinosaurs, and there's nothing Jason "J.D." Dean loves more than chaos. See them in Heathers.
Hoban Washburne shows you can be a hotshot space pilot *and* play with dinosaurs. See them in Firefly.