Because you like Katara in Avatar: The Last Airbender

Clarice Starling is patiently working with one serial killer to stop another. See them in The Silence of the Lambs.

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!!.

People think Karen Smith is a dumb blonde, but she disagrees and is proud she can predict the weather with her breasts. See them in Mean Girls.

Donna Carmichael is a free-spirited single mom and gracefully aging hippie. See them in Mamma Mia!.

The ever-cheerful Tonks can change her appearance at will, but she can't seem to get rid of her clumsiness. See them in Harry Potter Series.

A born psychopath, don't expect Michael Myers to understand the difference between right and wrong. See them in Halloween.

For Morgana, sometimes wanting to do the right thing can led you down the wrong path. See them in Merlin.

Newt Scamander is more comfortable with animals than people, even if the animals are super-dangerous magical creatures. See them in Fantastic Beasts and Where To Find Them.