Aleister Crowley

Aleister Crowley (アレイスター＝クロウリー) is the founder, leader, and General Superintendent of Academy City who holds power greater than that of the Board of Directors. An eccentric genius who was once the greatest magician in modern magic history, more than half of all modern Western magicians are influenced by his established theories, and two-fifths of them are direct followers of his ways. Having stretched the boundaries of sorcery farther than the advances made in the last few millenia alone and having written a top-class spellbook like "The Book of the Law", it is no surprise that many mages were outraged when he literally "dumped" all his magic abilities and decided to "ace it" in the field of science, thus establishing Academy City and becoming its hidden monarch.

When he had chosen to stop using magic and had been running for his life from the entire Magic Cabal, he met Heaven Canceler, who eventually helped him found Academy City in a far-Eastern island of Japan and also provides help in extending the ex-magician's lifespan for as long as possible by having all but his consciousness rely on the power of machines.

He currently resides in the "Windowless Building" that is designed to stop even a nuclear attack and can block even Accelerator's strongest vector attack, the latter of which is shown in Volume 13. The building can even produce its own oxygen, and in Volume 15, Awaki reveals that it can block even radiation from space.

In the novels, his appearance is described as someone who "looks like an adult, yet also a child; like a man, yet also a woman; like a saint, yet also a criminal". His personality is that of one who doesn't show many overt expressions, but still possesses emotions. From the various novels, but especially Volume 15, he is shown to be a mastermind behind everything, having many plans running parallel and seemingly abandoning one plan in favor of another if it fails, though the act of doing so, with the apparent disbanding of one enabling the execution of another or even the original purpose of the plan benefiting from its discontinuation, could still be a facade. Musujime Awaki once said that his plans are probably beyond what anyone can think of, and in his eyes, even the planet might only be a resource for use and discarding.

In later novels (from Volume 19 onwards), Aiwass has said that Aleister's plans are starting to crack bit by bit even with him revising the plans often to make the best of unforseen situations; this is one of the reasons for Aleister ordering the elimination of Hamazura Shiage, since he defies Aleister's predictions time and time again.

Index Arc
Aleister is first introduced to in the series at the end of Index arc when he orders Stiyl to team up with Touma for his next mission involvind Deep Blood

Kazakiri Kyouka Arc
Tsuchimikado gets himself transported to Aleister place by Awaki's ability to talk about the magician who has enetered Academy City, Sherry Cromwell. Tsuchimikado volunteers to stop her, but Aleister said that he will let Touma deal with it.

At the end of the arc Aleister is seen talking to Tsuchimikado again and he is being warned that if he is planing on using the Imagine Breaker he should be ready for the right hand to destroy his illusions. However he than claims that the illusions he believen in are already destroyed.