- Theodore Miller is the Chief Tower Master, leader of the four magic towers.
- He is the Former Master of the Seven Sins grimoire Gluttony.
Theodore Miller was a passionable young youth who had a bad aptitude for magic, he was frustrated for not passing the test to graduate in Bergen academy, which consisted of stepping into the 3rd circle. After not finding answers from his teacher for his problem, Theodore started to constantly read in the library, this attracted the ominous grimoire Gluttony who was searching for a worthy master. This was the dawn of a new grandmaster in magic.
became the 8th circle, by force consuming the grimoire of death "Death's Worship", in episode 295
Is the last magician of 9th circle and the first magician of the 10th circle.