Because you like Sookie Stackhouse in True Blood
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.
Mabel Pines loves sparkles, animals, friendship, and fun. See them in Gravity Falls.
With an abundant supply of alcohol, nice restaurants, and free will, Crowley is a demon who is thoroughly enjoying his time on Earth. See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.
His name is Chucky, and he's your friend till the end. Hidey-ho! See them in Child's Play.
A great galactic bounty hunter, Samus Aran is not as good at expressing emotions. See them in Metroid.
Deadpool thinks life is an endless series of train wrecks with only brief commercial-like breaks of happiness. See them in Deadpool.
When you live your life in public, like Mima Kirigoe, it's hard to know who you really are. See them in Perfect Blue.
For Celty Sturluson, it's rather upsetting to be the only headless girl in a city filled with full-bodied humans. See them in Durarara!!.
Charles Boyle is the human equivalent of a puppy, only slightly less adorable. See them in Brooklyn Nine-Nine.
Lux Lisbon's flirtatious manner attracts a lot of male attention. She relishes the power that her sexuality grants her. See them in The Virgin Suicides.
While all of London is distracted with balls and engagements, Eloise is enlisted by the Queen of England to hunt down the mysterious town gossip. See them in Bridgerton.
King Schultz is about as color-blind as a man of his era can be. See them in Django Unchained.