Because you like Peppy Hare in Star Fox
Brilliant, violent, and only a little insane, the Joker doesn't listen to anyone except the voices in his head. See them in DC Extended Universe.
She's mostly doom and gloom, but you'd get nowhere without Sadness. See them in Inside Out.
John Watson is haunted by his past (who isn't) but he's starting to branch out with some help from a world class detective. See them in Sherlock.
L is enigmatic, child-like, and one of the smartest people in the world. See them in Death Note.
Belle has ready every storybook in town, and she's slowly realizing that life is no fairytale. See them in Beauty and the Beast.
With great power comes great responsibility, but Peter Parker always seems to get the short end of that bargain. See them in Marvel Cinematic Universe.
He's an eccentric pirate making it up as he goes along. He's Jack Sparrow, savvy? See them in Pirates of the Caribbean: the Curse of the Black Pearl.
After surviving consecutive fights-to-the-death (damn you, President Snow!), Katniss Everdeen is thrust to the front lines of a real war. See them in The Hunger Games .