Because you like Matilda Wormwood in Matilda

Whether it's a companion he’s failed or lingering guilt from the war, the Doctor can never truly let go of his past lives. See them in Doctor Who.

England may cultivate the image of a well-bred gentleman, but he has both the temper and mouth of a seasoned sailor. See them in Axis Powers Hetalia.

Lady Bird's heart is in the right place, usually, but even the purest of people can fall sway to the havoc-wreaking traps of senior year. See them in Lady Bird.

Cassie Sullivan is resilient and resourceful, but she's not quite as brave as she pretends to be. See them in The 5th Wave.

Yukiteru is a reclusive observer who would rather watch life go by than participate in it. See them in The Future Diary.

The Terminator is an emotionless killing machine who won't stop until he's changed the future. See them in The Terminator.

Sandy Olsen is out of her head, hopelessly devoted to Danny. See them in Grease.

His name is Olaf, he's a snowman, and he likes warm hugs. See them in Frozen.

Neytiri is an accomplished woman with no patience for stupidity. See them in Avatar.

Rebecca Bunch struggles with decision making. So much so that she chases her high school boyfriend across the country to win him back. See them in Crazy Ex-Girlfriend.

Big Boss is a disillusioned mercenary commander who wants to create a world for soldiers (and soldiers alone). See them in Metal Gear Series.

Given his ability to wrench street signs from the ground, Shizuo Heiwajima is a useful one to have in dangerous Ikekuburo. See them in Durarara!!.