Because you like Martha Jones in Doctor Who

Goh Peik Lin is funny, unfiltered, and a fiercely supportive friend. See them in Crazy Rich Asians.

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

Tina Cohen-Chang is a shy loner who becomes a fierce performer on stage. See them in Glee.

Maurice Moss is a dedicated IT guy who even talks like a computer. See them in The IT Crowd.

Bucky Barnes used to be a good-hearted American soldier. Now he's the cold-hearted Winter Soldier. See them in Marvel Cinematic Universe.

Ofelia is face-to-face with the deadliest creatures of the underworld and completely unafraid. See them in Pan's Labryinth.

The crown prince of the Fire Nation, Zuko has been ordered by his father to find the long-lost Avatar before he is allowed to return home. See them in Avatar: The Last Airbender.

Relentlessly cheerful and optimistic, Erin Hannon is an office receptionist. See them in The Office.

Haymitch Abernathy is a trainer for the tributes of District 12, although he's never sober enough to give much advice. See them in The Hunger Games .