Aureolus Izzard

is an antagonist in Toaru Majutsu no Index. He is a powerful alchemist and Roman Catholic Church magician who turned traitor. His sorcery name is Honos628, "To honour our world". Three years before the story began, he was Index's former partner and was devastated when the young nun was forced to have her memories erased in order to save her life. He perfected his alchemy to the state of "Ars Magna", alchemy that turns his thoughts into reality, though he uses his words to try and focus and direct his thoughts. This alchemy is heavily reliant on his belief and state of mind; the more he doubts, the weaker his spell becomes until it does not activate at all.