Because you like Madame Vastra in Doctor Who

Helena is a mentally unstable, childish, and completely merciless. And most of all, she's an unstoppable killer. See them in Orphan Black.

Liesel Meminger is trying to ease the suffering of those around her, German and Jew alike. See them in The Book Thief.

You won't like him when Bruce Banner is angry. See them in Marvel Cinematic Universe.

Will Turner is an earnest, lovelorn blacksmith's assistant with an adventurous spirit. See them in Pirates of the Caribbean: the Curse of the Black Pearl.

A singing nanny, Mary Poppins is practically perfect in every way. See them in Mary Poppins.

Audrey Horne may seem inquisitive and charming, but she can turn on a dime. See them in Twin Peaks.

Buddy Pine is an unhinged superfan of superheroes using technology to take down his idols. See them in The Incredibles.

It's easy to see why Poe Dameron would side with the rebellion: he's bad at taking orders, likes to show off, and is committed to the cause. See them in Star Wars Series.

Small and curious, he is a 50-year-old baby of a peculiar green species with unusual abilities. See them in The Mandalorian.

Wheatley's got an endless supply of bad ideas that he wants to share. See them in Portal Series.

Driven yet empathetic, Emily Prentiss brings humanity to the pursuit of inhuman killers. See them in Criminal Minds.

A brave but pessimistic nobleman, Boromir knows one does not simply walk into Mordor. See them in The Lord of the Rings.