Because you like Asuka Langley Soryu in Neon Genesis Evangelion
Raiden is an efficient soldier haunted by his repressed past. See them in Metal Gear Series.
Sideshow Bob is a bitter ex-performer who was forced to do inhumane stunts for slapstick comedy. Now he's exacting revenge on his former boss, a clown. See them in The Simpsons.
A courageous boy robot, Mega Man is dedicated to achieving everlasting peace. See them in Mega Man.
Catwoman might be slightly unhinged, but you can't say this feline villainess isn't confident. See them in DC Extended Universe.
Vanellope von Schweetz is princess of the Sugar Rush game who could care less about being royal. See them in Wreck it Ralph.
A fight every now and then makes Dante's life a little more interesting. See them in Devil May Cry.
Stoic, cynical, and brilliant, Solid Snake was genetically engineered to be the perfect soldier. See them in Metal Gear Series.
Bad-ass Rayne has sworn her life to finding and destroying her vampire dad, Kagan, and killing as many other vampires as she can in the bargain. See them in BloodRayne .
Though Twilight might be opposed to it, her new friends might just be able to teach this serious-minded pony how to relax. See them in My Little Pony.
Call her. Beep her. If anyone's in trouble, Kim Possible is there. See them in Kim Possible.