Because you like Scott Pilgrim in Scott Pilgrim vs. the World

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

Combining an innocent face with an insatiable bloodlust, Eli recruits friends to join the vampire way of life. See them in Let the Right One In.

Macbeth was probably named "Most Likely to Kill His Rivals" in his senior yearbook. See them in Macbeth.

Wheatley's got an endless supply of bad ideas that he wants to share. See them in Portal Series.

The destroyer, Drax lives for one thing and one thing only: revenge. See them in Marvel Cinematic Universe.

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.

Sterling Archer is a fun-loving, car-driving spy extraordinaire. But one can tell his mother didn't hug him as a child. See them in Archer.

While his twin tries to save lives, Millions Knives does the best to end them. See them in Trigun.

Oscar Martinez is a national accountant in an office of weirdos. See them in The Office.

Randy Marsh is a geologist and Nobel Prize winner who is into binge drinking, starting riots, the Food Network, and P.F. Changs. See them in South Park.