Because you like Cleveland Brown in Family Guy
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.
Will Byers is just like any other twelve year old, except he's stuck in another dimension. See them in Stranger Things.
Toph is a tenacious earthbender full of spirit and spunk and hates when people try to baby her because she's blind. See them in Avatar: The Last Airbender.
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.
Moana is brave, adventurous, and dutiful. And with the ocean on her side, there's no telling how far she'll go. See them in Moana.
George Weasley likes to invent quirky joke products, play Quidditch, and cause poor Mrs. Weasley a lot of anxiety. See them in Harry Potter Series.
Neil Perry is a brilliant student with an artist's soul. And he's desperate to unleash it. See them in Dead Poets Society.
Is there more to life than being really, really, ridiculously good looking? Derek Zoolander thinks not. See them in Zoolander.
With a song always on her lips and her heart on her sleeve, Maria von Trapp is the governess every kid dreams of. See them in The Sound of Music.
A master manipulator, Frank Underwood has a tight grip on Washington DC. Plus who doesn't like having a leader who frequently tosses off Shakespearean asides? See them in House of Cards.
Django was once a slave. Now that he has a taste of freedom, he understandably wants a full meal. See them in Django Unchained.
Raiden is an efficient soldier haunted by his repressed past. See them in Metal Gear Series.