Because you like Arizona Robbins in Grey's Anatomy

Titus Andromedon will show you the ropes, help you with your problems, and sing at you constantly, whether you like it or not. See them in Unbreakable Kimmy Schmidt.

A great galactic bounty hunter, Samus Aran is not as good at expressing emotions. See them in Metroid.

Nemo is a small fish in a vast ocean, but he dreams of seeing it all. See them in Finding Nemo.

Did he ever tell you the definition of insanity? Just wait, and this psychopath will do just that. See them in Far Cry 3.

A genetic experiment engineered to be the perfect assassin, Agent 47 is cold, professional, and lethal. See them in Hitman.

After becoming accepted into the group of popular girls, Tracy Freeland has turned from a sweet and reserved teenager into a monster. See them in thirteen.

Castiel might be an immortal angel, but the human world is still more than a little confusing. See them in Supernatural.

If you hang out with Bender in cool dive bars in 31st century New York, make sure you're on his "Do Not Kill" list. See them in Futurama.

A fight every now and then makes Dante's life a little more interesting. See them in Devil May Cry.

Hiccup Haddock III may be the only Viking nerd in recorded history. See them in How to Train Your Dragon.

Yuri Plisetsky's a hotheaded punk off the ice, incredible artist on it. See them in Yuri on Ice.

Seth is short-tempered, crude, and terrible at school, but hopefully there's nothing an epic party can't fix. See them in Superbad.