Because you like Martha Jones in Doctor Who

Polite and clever, Annie James is not afraid to stir up a little mischief. See them in The Parent Trap.

Bobby Singer is a redneck ghost hunter, but all he wants to do is retire to the junk yards of South Dakota. See them in Supernatural.

R2-D2 has been in the galaxy saving business for decades. Not bad for somebody whose vocabulary is limited to "beep-boop." See them in Star Wars Series.

Green skin, pointy hat, evil cackle—this villain has it all! See them in The Wizard of Oz.

The Genie is the perfect buddy, granting every wish we might have and keeping life good-spirited. See them in Aladdin.

Terry Jeffords (and his muscles) may look ferocious, but inside he's just a caring mama hen. See them in Brooklyn Nine-Nine.

There's magic behind Tara Maclay's quiet façade. See them in Buffy the Vampire Slayer.

In constant agony, Ava Starr will do anything to give up the superpowers that are slowly killing her. See them in Marvel Cinematic Universe.

George Weasley likes to invent quirky joke products, play Quidditch, and cause poor Mrs. Weasley a lot of anxiety. See them in Harry Potter Series.

Andy Bernard is a preppy Cornell grad who's very likely to break into an acapella performance. See them in The Office.

Michael Kelso gets by on his good looks and his openhearted nature. See them in That '70s Show.

This cannibalistic villain may be a loner, but Killer Croc doesn't have problems with self-confidence. See them in Suicide Squad.