Because you like Isaac Clarke in Dead Space
Therese Belivet spent her life letting other people guide her along, and she wants to take control now. See them in Carol.
A meticulous forensic scientist, Edward Nygma is insanely good at his job. Emphasis on the "insane" part. See them in Gotham.
Though he has a brilliant mind for mathematics, Christopher has a much harder time processing the rest of the world. See them in The Curious Incident of the Dog in the Night-Time.
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.
A life spent as "Number Two" is bound to give Diego Hargreeves an inferiority complex. See them in The Umbrella Academy.
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.
Driven by obsession and anxiety, Monk bravely overcomes, or at least battles, his fears to help the world. See them in Monk.
A childlike space cadet, Brittany Pierce has a surprisingly open-minded spirit. See them in Glee.
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!!.
Robbie Turner has been accused of a crime he never committed, changing the course of his life forever. See them in Atonement.
Tobias "Four" Eaton is only afraid of four things, but you should probably be afraid of him. See them in Divergent.