Because you like Stephen Hawking in The Theory of Everything
Liesel Meminger is trying to ease the suffering of those around her, German and Jew alike. See them in The Book Thief.
This lab mouse has one thing on his huge brain: trying to take over the world on a nightly basis. See them in Pinky and the Brain.
Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.
Donkey is proof that if you're annoying enough you can change the world; he's the reason that his friend Shrek does, well, anything. See them in Shrek.
Greg Heffley will be famous someday, but now he's stuck in class with morons. See them in Diary of a Wimpy Kid.
Nick Carraway is the perfect observer: always there for the events, but never too involved. See them in The Great Gatsby.
Macbeth was probably named "Most Likely to Kill His Rivals" in his senior yearbook. See them in Macbeth.
Baloo is a fun-lovin' bear who just needs the bare necessities of life See them in The Jungle Book.
It's a mad, mad world, but Alice has a surprisingly level head as goes her own way down the rabbit hole. See them in Alice in Wonderland.
Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.