Because you like Arthur in Merlin

Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.

A Silurian lizard woman, Madame Vastra has a penchant for puzzles and interspecies romance. See them in Doctor Who.

Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.

Arwen has to choose between a life of loneliness or love and inevitible death, both rather unfortunate options. See them in The Lord of the Rings.

Point the fun-loving Pippin Took towards second breakfast, and he's one happy hobbit. See them in The Lord of the Rings.

Mike Hannigan is a lawyer-turned-pianist who loves to tap into his kooky side. See them in Friends.

Sometimes being a supportive girlfriend like Ophelia doesn't work out too well. See them in Hamlet.

Emma Frost's superpower: transforming her body into an unbreakable diamond. See them in X-Men Series.

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

Milo Thatch is an enthusiastic researcher without cynicism. See them in Atlantis: The Lost Empire.

Leonard "Bones" McCoy is passionate, moral, and ready to stitch you back together. See them in Star Trek.

Nick Carraway is the perfect observer: always there for the events, but never too involved. See them in The Great Gatsby.