Taurus, the Unicorn Slayer

A roman soldier which due to a series of unfortunate and unlikely events, came to despise all supernatural beings, be it good or evil.
His dog was eaten by zombies when he was 10. He got mugged by a tooth fairy on meth when he was 12. His parents were killed by vampires when he was 15 years old. And at the age of 24 his wife ran away with a fairy on the back of a black unicorn.