Because you like Vada Sultenfuss in My Girl
World domination and Superman's demise are next on Lex Luthor's to-do list. See them in DC Extended Universe.
Part of an elite team of investigators, Abby Sciuto is the happiest Goth to ever work in law enforcement. See them in NCIS.
Francis Freeman may be impervious to pain, but he sure knows how to inflict it. See them in Deadpool.
Veronica Lodge is a quintessential mean girl trying to make a better life, and a better self. See them in Riverdale.
CIA operative Carrie Mathison is on a self-assigned mission to follow a lead, whether it be the truth or just her delusions playing tricks. See them in Homeland.
A reclusive introvert, Liz Sherman has a temper that's literally lethal. See them in Hellboy.
Sheldon Cooper is brilliant in every way except, well, interacting with any human being. See them in The Big Bang Theory.
Cosima Niehaus loves exploring the unknown. Even her own DNA is a puzzle, waiting to be unlocked. See them in Orphan Black.
Titus Andromedon will show you the ropes, help you with your problems, and sing at you constantly, whether you like it or not. See them in Unbreakable Kimmy Schmidt.
A bloodsucker, Carlisle Cullen is actually more likely to give you a blood infusion. See them in Twilight.
Princess Bubblegum is brilliant and determined, but can display a nasty temper. See them in Adventure Time.
Jean-Baptiste Grenouille may have a phenomenal sense of smell, but he has a weak sense of morality. See them in Perfume: The Story of a Murderer.