Because you like Porthos in The Three Musketeers

Casey Gardner is an angsty teenage girl with quite a bit of sass that keeps getting her in trouble. See them in Atypical.

In a rag-tag group of kids determined to take down the imperialistic Fire Lord, Katara is the glue that holds them together. See them in Avatar: The Last Airbender.

Megamind is searching for purpose in a supervillain life without a superhero to fight. See them in Megamind.

Matilda Wormwood is so smart, she taught herself how to be psychic. See them in Matilda.

Thanks to the contributions of this 14-year-old, the world is only occasionally destroyed by his grandfather. See them in Rick and Morty.

Although Morrigan knows every kind of magic there is, friendship is an untested area for her. See them in Dragon Age Series.

Garnet is a Crystal Gem who'll protect her friends with her life. See them in Steven Universe.

If you cross him, Tommy Shelby is the last man you'll ever see. Not too hard on the eyes though. See them in Peaky Blinders.

The Hastings family is old and powerful, and Spencer will do anything to continue excelling. See them in Pretty Little Liars.

Bobby Singer is a redneck ghost hunter, but all he wants to do is retire to the junk yards of South Dakota. See them in Supernatural.

He may forget his homework, lose his toad, and fall off brooms, but Neville Longbottom can also single-handedly destroy villains. See them in Harry Potter Series.

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