Because you like Dolores Umbridge in Harry Potter Series

Carol Peletier's credo: your strength comes from who you are, not who you used to be. See them in The Walking Dead.

Just because he rules Hades, doesn't mean he can't be fun! See them in Hercules.

Burton Guster is a level-headed investigator with a "Super Sniffer" nose. See them in Psych.

Michelle Richardson's world revolves around her boyfriend. Alas, his world doesn't revolve around her. See them in Skins.

Thanks to the contributions of this 14-year-old, the world is only occasionally destroyed by his grandfather. See them in Rick and Morty.

On the outside, Gwen seems meek and calm. But she has an inner core of steel. See them in Merlin.

James Wilson is a compassionate doctor who willingly plays the sidekick. See them in House M.D..

Frank Reynolds is too gross even for the prostitutes he hires. See them in It's Always Sunny in Philadelphia .

Raven Reyes may be a deliquent, but she's also the youngest zero-gravity mechanic who fixed a 130-year old escape pod to make it through the descent to Earth. See them in The 100.

A meek schoolteacher, Mary Margaret Blanchard can't remember her past as a spirited, swashbuckling Snow White. See them in Once Upon a Time.

Goh Peik Lin is funny, unfiltered, and a fiercely supportive friend. See them in Crazy Rich Asians.

Brian Griffin is the most scholarly member of the family—when he's not drunk on martinis. See them in Family Guy.