Because you like Knuckles the Echidna in Sonic the Hedgehog

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.

Donatello might come off as a tad nerdy, but don't let his geekiness fool you. He's a trained ninja and a skilled fighter. See them in Teenage Mutant Ninja Turtles.

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

After Rintarou Okabe develops the Phone Microwave, some of his fantasies start to seem uncomfortably real. See them in Steins;Gate.

John Wick is a widowed former Navy Seal who becomes a notoriously effective hitman, killing over 124 people with gunshots alone. See them in John Wick.

C is for cookie, and that's more than good enough for him. See them in Sesame Street.

For Wreck It Ralph, it's not easy being the bad guy. Especially when you've been designed to destroy but really desire love. See them in Wreck-It Ralph.

Society may reject Felicia, but this bubbly catwoman just wants to spread happiness to others. See them in Darkstalkers .

Driven and straightforward with high-technology parts, EVE was sent to Earth to see if it is habitable. See them in WALL-E.