Michael Holiday.

There are many names for what he does: murderer, criminal, killer, assassin and so on. Mike is ruthless when it comes to his job. Remorseless, highly intelligent, obsessed with his victims, fascinated with death and is an expert in armed and unarmed combat. In short, the perfect killer.

This is why Discord seeks his favor in order to bring Equestria to its knees. He had never seen a human so chaotic as Mike before, and will hand Mike a new playground of victims just so he can usurp the throne.

(Crossover with Die in Style (which can be found here) and MLP:FiM.) Told in First-Person by Mike.