Because you like Spike in Buffy the Vampire Slayer
Tom Hansen is a full-fledged romantic impatiently waiting for his love story. See them in (500) Days of Summer.
Others see him as the town nutcase, but Flint Lockwood knows his inventions will change the world someday. See them in Cloudy with a Chance of Meatballs.
Connor Walsh is arrogant enough to think he's the smartest guy in the room, and quick-witted enough to prove that he is. See them in How to Get Away with Murder.
Oliver Tate is extremely articulate but hopelessly awkward. That's not a recipe for teenage happiness. See them in Submarine.
Megamind is searching for purpose in a supervillain life without a superhero to fight. See them in Megamind.
The last war left his economy devastated, and now Germany is engaged in another war and stuck with two barely trained allies for help. See them in Axis Powers Hetalia.
With each reboot, Janet progresses more and becomes capable of human emotions. See them in The Good Place.
Talented but anxious, Shinji Ikari struggles to bear the challenges that life hands him. See them in Neon Genesis Evangelion.
Casey Gardner is an angsty teenage girl with quite a bit of sass that keeps getting her in trouble. See them in Atypical.
Reclusive, quiet, and seemingly emotionless, Lain Iwakura feels like an outsider in her hyper-connected world. See them in Serial Experiments Lain.
Sid Jenkins is the ultimate underachiever, but he doesn't mind. Well, he pretends he doesn't. See them in Skins.
A ball of cheerful energy, Pinkie Pie is as sweet as her name suggests and lives to bring others joy with laughter and parties. See them in My Little Pony.