Gluttony

Gluttony was a higher demon and was part of the 7 devils. He had three eyes, each with a different ability that would make him nearly impossible to defeat in a battle. One eye was for seeing the future (about 10 seconds into it usually) One allowed the demon to physically see magic before it appeared to others. Then the last one allowed him to read people's emotions. His abilities gave him an edge over others in combat and he grew arrogant. He saw himself better than the other 6 devils and was rather cocky because of this. At some point, Wrath (One of the 7 devils) had enough of this and joined with the other 5 devils to come up with a plan to kill Gluttony. They cornered Gluttony with the help of an angel (Dont trust angels, this one wanted to weaken the strongest demons for an upperhand) and took two of his eyes. Another angel intervened knowing the balance would be off if one of the seven devils were killed and instead of letting Gluttony die, it took his last eye and banished him to a pocket-like realm where he sat alone (safe though). Gluttony didnt know but the second angel did what had to be done to save Gluttony from his fate, he was too upset about being locked up for what seemed like an eternity. - One Eye was given to the demon Wrath, one was lost to the inbetween and the last one was left in the mortal realm. This eye (Which gluttony could still see through) in the mortal realm took the form of a camera that could see magic and into the demon realm, humans were attracted to the camera's ability, but with too much use the demon would have too much of a hold on your soul and would eventually bring you to him and eat you. Someday someone finds the camera who already held supernatural abilities beforehand and somehow now was able to visit the demon and physically jump realms (only with the help of the camera.) Missing companionship and realizing this human will just TP away whenever he tries to eat it (He has tried); decides to use this human as a companion to help him find his other eyes and finally break out of his prison with vengeance.