On a somewhat peaceful evening, you decide to try summoning a Transient. Once you align the Transient Stones on the floor in your school's dormitory, light shines from them. Recomposing yourself from the flash, you open your eyes and see... I am Mephistopheles, representative of the king of Gehenna, and the Mirror Butler. Now, a contract for your soul with this servant who loves the light not, if you will...

A bovine Transient, with a rather sadistic air to him. He appears thrill-thirsty.