Because you like Murph in Interstellar

Big Boss is a disillusioned mercenary commander who wants to create a world for soldiers (and soldiers alone). See them in Metal Gear Series.

Diana Prince is using a truth-telling lasso and super-strength to make Earth a little more like Paradise. See them in DC Extended Universe.

Small in stature, Clara Oswald has a big appetite for adventure. See them in Doctor Who.

A believer in the pursuit of justice, Garrus Vakarian hates it when bad guys slip through the cracks of the bureaucratic justice system. See them in Mass Effect.

It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.

A sadistic sociopath, Lil Z is helping make the City of God slum a Hell on Earth. See them in City of God.

Marv is a brutish but principled thug who'd be right at home on an ancient battlefield. See them in Sin City.

For Lee Everett, every day is now just another struggle to collect supplies, find other survivors, and stay alive. See them in The Walking Dead (Video Game).

Brian Griffin is the most scholarly member of the family—when he's not drunk on martinis. See them in Family Guy.

A responsible kid, Hugo Cabret is still capable of flights of fancy. See them in Hugo.

Eddie Brock is a big-hearted investigative journalist who is going through the world's weirdest identity crisis. See them in Venom.