A unicorn, vampire, pegasus mix. When a vampire came across a unicorn-pegasus cross and bit it, the animal got away and changed to a vampire of it's form. Vampires had a strict rule against biting unicorns because of their good nature, they would give away the secret of vampires. But rather than killing it, the vampire changed it's point of view so that the univampegasus could live. The horn is used to pierce the animal's prey and change it's form while the fangs are used to drain that animal of its blood.