Because you like Derek Shepherd in Grey's Anatomy

The brilliant and well-adjusted Ender Wiggin is being groomed for the next generation of military leaders to fight alien invaders. See them in Ender's Game.

There are certain souls the surprisingly sensitive Death would rather not reap. See them in The Book Thief.

America Singer is a feisty, fiercely independent musician who places little value on the restrictive rules of her society. See them in The Selection .

Jade Jade Harley might not be the best at reading social cues, but her bravery and selflessness means she's a great friend to have. See them in Homestuck.

Jin Kazama is a fearsome warrior torn between the darkness and the light. See them in Tekken .

An escaped convict on a mission, Sirius Black is brooding, brave, and reckless. See them in Harry Potter Series.

A dreamy space cadet, Luna Lovegood has never met a conspiracy theory she didn't believe in. See them in Harry Potter Series.

Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.

The quiet, intense Daryl Dixon lets his crossbow do the talking. See them in The Walking Dead.

Basically a giant pillow come to life, Baymax is a medical robot created for the sole purpose of helping people. See them in Big Hero 6.

If Lisbeth Salander can hurt a bastard who deserves it by digging up stuff about him, she feels good. See them in The Girl with the Dragon Tattoo.

Leonidas is not the kind of king who merely gives orders; rather, he's out on the battlefield fighting alongside his men. See them in 300.