Because you like River Song in Doctor Who

Sookie St. James is a klutzy and perfectionist chef who's always there for her friends. See them in Gilmore Girls.

A short-tempered guy, Bowser is determined to wreak havoc on the Mushroom Kingdom. See them in Super Mario Bros..

Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.

A stylish agent, Agent J would rather improvise than play by the rules. See them in Men in Black.

While he might drive colleagues crazy with his antics, Jake Peralta cares about the Nine-Nine more than most things. Including personal hygiene. See them in Brooklyn Nine-Nine.

Harrison Wells is a brilliant scientist full of secrets. See them in DC Extended Universe.

Jacob Kowalski is just a baker caught up in an otherworldly adventure. See them in Fantastic Beasts and Where To Find Them.

If you cross him, Tommy Shelby is the last man you'll ever see. Not too hard on the eyes though. See them in Peaky Blinders.

With his good looks and magnetic personality, Will Smith seems destined to be a Hollywood megastar. See them in The Fresh Prince of Bel-Air.

Robin Scherbatsky is a former teen pop star who loves dogs and is scared of relationships. See them in How I Met Your Mother.

C is for cookie, and that's more than good enough for him. See them in Sesame Street.

Amy March blends her naturally artistic spirit with a sense of practicality. See them in Little Women.