Luminous Valentine, is the fifth seat of the Octagram, previously known as the Ten Great Demon Lords. She regained her position from Roy Valentin once her cover as his maid is blown and the group's subsequent renaming. As a Demon Lord, she rules the Holy Empire of Lubelius and all Vampires. Being one of the oldest demon lords, she has formed alliances, including with humans, to broaden the influence of the Western Holy Church and her own faith. She has also been in a long struggle with Dagruel, another member of the Octagram, because of his desire to end his lands food shortage by taking Luminous' territory.