Because you like River Song in Doctor Who

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

Beneath Arthur's brash demeanor lurks the heart of a compassionate future king destined to unite the five kingdoms. See them in Merlin.

Kilgrave is a domineering, abusive boyfriend. Then, add in the power of mind control. See them in Marvel Cinematic Universe.

Pengiuns, turtles, and all things scientific is where Sam's expertise lies. Girls are uncharted territory, but Sam is trying to branch out. See them in Atypical.

Protecting his family's name and its power are more important to Tywin Lannister than anything or anyone. See them in Game of Thrones.

A kind, sensitive medical intern doing the best he can, George O'Malley sometimes struggles to keep up. See them in Grey's Anatomy.

Emma Frost's superpower: transforming her body into an unbreakable diamond. See them in X-Men Series.

Stanley Barber is a loveable goofball with impeccable (if eccentric) fashion sense, unique music taste, and a wealth of strange but useful knowledge. See them in I Am Not Okay With This.

Alex Russo desperately wants to keep her magic – after all, things are so much easier when you can just wave a wand. See them in Wizards of Waverly Place.

James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. See them in DC Extended Universe.

A devoted butler, Alfred Pennyworth is both a fiercely protective guardian and a lethal gunman. See them in Gotham.