Because you like Cookie Monster in Sesame Street

Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.

The destroyer, Drax lives for one thing and one thing only: revenge. See them in Marvel Cinematic Universe.

Few can match this dwarf when it comes to self-confidence. Gimli is as eager for a good time as he is for a fight. See them in The Lord of the Rings.

The fearless bodyguard of Rick Flag, Katana will ruthlessly kill her enemies, trapping their souls in her sword. See them in DC Extended Universe.

Neal Cassidy is a charming former thief with a heroic side. See them in Once Upon a Time.

Polite and clever, Annie James is not afraid to stir up a little mischief. See them in The Parent Trap.

Reckless, vulgar, loud-mouthed: that's what makes Amethyst so awesome. See them in Steven Universe.

Not only will Emmett Brown's time-saving gadgets help you travel with ease, his tinkering on your car will help you get wherever you need to go. Fast. See them in Back to the Future.

An adventurous dreamer, George Bailey always winds up putting other people's dreams first. See them in It's A Wonderful Life.

Lily Aldrin is a flaky but supportive kindergarten teacher and painter. See them in How I Met Your Mother.

Egon Spengler prefers collecting spores, molds, and fungus to interacting with people. See them in Ghostbusters.