Because you like Queenie Goldstein in Fantastic Beasts and Where To Find Them
Dolores Umbridge keeps her villainy hidden (albeit poorly) behind a sheen of sugary pink politeness. See them in Harry Potter Series.
Clarice Starling is patiently working with one serial killer to stop another. See them in The Silence of the Lambs.
Lucius Malfoy is a judgmental social climber who has a bigoted superiority complex. See them in Harry Potter Series.
On the outside, Gwen seems meek and calm. But she has an inner core of steel. See them in Merlin.
Princess Bubblegum is brilliant and determined, but can display a nasty temper. See them in Adventure Time.
Hunting ghosts is both a job and a passion for Abby Yates. See them in Ghostbusters (2016).
Peter Kavinsky is a jock who only cares about getting back at his ex, or so he says. See them in To all The Boys I've Loved Before.
Macbeth was probably named "Most Likely to Kill His Rivals" in his senior yearbook. See them in Macbeth.
Extremely violent and loyal, Sandor Clegane is called the Hound for a reason. See them in Game of Thrones.
Madman, murderer, or musician? No one knows the Phantom behind the mask. See them in The Phantom of the Opera.
An alien living in a temple shaped like a giant woman, Pearl enjoys ballet, fencing, and using her magical spear. See them in Steven Universe.