Because you like Margaret Houlihan in M*A*S*H

Mark Sloan is the best plastic surgeon and biggest playboy the hospital's ever seen. See them in Grey's Anatomy.

Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.

Wei Wuxian is the most charming and fun necromancer around. See them in The Untamed.

Rory Williams is a caring companion whose specialty is looking after others. See them in Doctor Who.

He's an everyday earthworm turned intergalactic hero. See them in Earthworm Jim.

Dallas Winston is headed down a dangerous, criminal road. See them in The Outsiders.

Caleb Rivers is a bad boy with a good reason for acting out. See them in Pretty Little Liars.

Kayla Day is externally shy, but internally spirited Gucci! See them in Eighth Grade.

Derek Shepherd is a talented and passionate neurosurgeon. Some people call him McDreamy. See them in Grey's Anatomy.

Chuck Bartowski is a sweet, laid-back electronics store/top secret government employee. See them in Chuck.

Although she is underestimated, Lagertha never fails to prove her worth as both a warrior and a mother. See them in Vikings.

Jo Wilson is an accomplished doctor who's getting over her past. See them in Grey's Anatomy.