Because you like Clara Oswald in Doctor Who
Juliet Starling is a cheerleader by day, gleefully unhinged zombie killer by night. See them in Lollipop Chainsaw.
Trevor Phillips is an unpredictable maniac who tortures people for no reason. See them in Grand Theft Series.
The son of Death has an obsession with perfection and symmetry. See them in Soul Eater.
Armin Arlert was wrong. This world hasn't become hell; it's been hell. He just couldn't see it before. See them in Attack on Titan.
While Alan Garner is loyal to his new friends, his efforts to help them often do more harm than good. See them in The Hangover.
An exuberant prankster, Naruto Uzumaki craves acknowledgement of any kind. See them in Naruto.
Finn is the world's last human who's "all about" understanding right and wrong. See them in Adventure Time.
Rue Bennett has been overprescribed and under-supervised her entire life. See them in Euphoria.
With each reboot, Janet progresses more and becomes capable of human emotions. See them in The Good Place.
Ace pilot Asuka Langley Soryu is confident, haughty, and a little less grown-up than she pretends to be. See them in Neon Genesis Evangelion.
When the going gets tough, Rick Grimes gets tougher. It's a very useful trait when the world goes to hell. See them in The Walking Dead.
When it comes to Haruko Haruhara, there's more to the pink-haired biker than meets the eye. See them in FLCL.