Because you like Minerva McGonagall in Harry Potter Series

The brilliant Mona Vanderwaal is proof that undergoing an "extreme makeover" isn't always a good thing. See them in Pretty Little Liars.

Gina Linetti views herself as a sort of life coach/influencer to the rest of the office. She's not so keen on the "work" aspect of her job. See them in Brooklyn Nine-Nine.

A born psychopath, don't expect Michael Myers to understand the difference between right and wrong. See them in Halloween.

When he's not working as a detective, Lucifer is driving around in a black convertible or having one-night stands. See them in Lucifer.

A formerly adventurous playboy, Will Traynor has become cynical by what life has thrown at him. See them in Me Before You.

Small in stature, Clara Oswald has a big appetite for adventure. See them in Doctor Who.

Lane Kim is the drummer for Hep Alien, but don't let her mom know. See them in Gilmore Girls.

Benoit Blanc is Sherlock with Southern charm, and a mysterious benefactor. See them in Knives Out.

In the simplest terms, in the most convenient definitions, people consider Brian a nerd. But he's more than that. See them in The Breakfast Club.

A whip-smart NYU professor who is a master of her classroom but less confident in her love life, Rachel Chu comes into her own on a trip to Singapore. See them in Crazy Rich Asians.

A grumpy tourist trap owner, Grunkle Stan has a few deep secrets. See them in Gravity Falls.

A self-proclaimed diva, Mercedes Jones is on the hunt for a stage worthy of her talents. See them in Glee.