Because you like Kara "Starbuck" Thrace in Battlestar Galactica
Years of being the less desirable Vargas sibling have given Romano quite an inferiority complex, as well as the temper to match. See them in Axis Powers Hetalia.
Guillermo is the best servant a vampire could ask for. For years now. Not that he's counting. See them in What We Do In The Shadows.
Stoic, cynical, and independent, Homura Akemi is an alluring enigma. See them in Puella Magi Madoka Magica.
Mabel Pines loves sparkles, animals, friendship, and fun. See them in Gravity Falls.
A scary monster on the outside, James P. Sullivan is really a softie on the inside. See them in Monsters, Inc..
Garnet is a Crystal Gem who'll protect her friends with her life. See them in Steven Universe.
Love Quinn is a trained chef and excellent girlfriend, but she's hiding something dark. And bloody. See them in You.
Bran Stark discovered a scandelous family secret. He swore to keep quiet but soon found himself on the receiving end of attempted murder. See them in Game of Thrones.
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.
An outgoing and quirky optimist, Louisa Clark has a zest for life. See them in Me Before You.
You'll never get Alaska Young. And that's the whole point. See them in Looking for Alaska.