Diablo: The Demonic Horse

This is Diablo, a seemly ordinary horse with small demonic traits. Although his true origin is unknown, or who his parents were, he is unlike the other demon horses. He is incredibly fast for a horse as well as being strong and intelligent, yet he acts like any wild horse. However he is constantly misunderstood, therefore trusts no-one. Yet he does have a small compassionate side to him.
Now he is used by the Catholic priests in Rome for capturing fast demons and monsters, yet is still cautioned.