Because you like Will Newman in Five Feet Apart

A few millennia in the mortal realm have caused DEATH to be quite enamored of life. See them in Discworld.

Charming and enigmatic, Amy Dunne takes her love for puzzles to a cunning new level. See them in Gone Girl.

Rupert Giles is a librarian on the outside, fearless evil-fighter on the inside. See them in Buffy the Vampire Slayer.

Leone Montana is a fearless hitman with a surprisingly sensitive side. See them in Leon: The Professional.

Jane Smith is a stone-cold killer, but you would never know it from looking at her. See them in Mr. & Mrs. Smith.

Beware! Anton Chigurh carries a coin with him, which he forces his victims to flip to decide whether they will live or die. See them in No Country for Old Men.

Clementine Kruczynski thinks that too many guys think she's a concept, or she completes them, or she's gonna make them alive. See them in Eternal Sunshine of the Spotless Mind.

With a brilliant mind, an insane level of confidence, and a penchant for drunken dancing, Cristina Yang is a force to be reckoned with. See them in Grey's Anatomy.

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

Lyra Belacqua is prone to getting in trouble, but she's also clever enough to get out of it. Most of the time. See them in The Golden Compass.

Winnie the Pooh is a chubby little cubby all stuffed with fluff. See them in Winnie the Pooh.

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.