A mysterious entity summoned by Aleister Crowley, Aiwass served as his former mentor. It bears various designations, including the codename DRAGON, alongside titles like "Holy Guardian Angel," "Extraterrestrial Life Form," and "the true person who holds the secrets to modern western magic organizations." Its origins and true form remain unknown, manifesting through avatars or energy forms for physical interaction. Aiwass first contacted Crowley during his 1904 Cairo honeymoon, using Crowley's wife Rose as a medium. It dictated the "Book of the Law," imparting angelic techniques and secret knowledge foundational to modern Western magical systems, marking the dawn of the "Aeon of Horus." Centuries later, Crowley contained Aiwass within Academy City's dimension akin to the Imaginary Number District. Manifestation requires specific conditions: aggregation of the city's esper AIM diffusion fields, the Misaka Network for guidance control, and a core avatar like Fuse Kazakiri—an artificial angel derived from Kazakiri Hyouka. This process imposes a severe physical burden on Last Order, whose connection stabilizes the form. Typically manifesting as a tall, thin humanoid with golden hair, effeminate features, and loose white garments, Aiwass blends human emotions like happiness, sadness, grief, and anger into an inscrutable, alien expression. On one Christmas Day, its form shifted inexplicably to a falcon-headed figure with talon-like hands, swan-like wings, a pale platinum glow, and a halo crowned by a central spike. Communication is casual and distorted, featuring interjections like "Oops" or swearing. Its speech includes elements defying human linguistic structure, described as "angelic language" or distortions from worldly incompatibility. Unlike Crowley's efficiency focus, Aiwass evaluates actions based on intrinsic "value" or entertainment potential. It shows fleeting interest in individuals like Accelerator, Kakine Teitoku, Kamijou Touma, and Hamazura Shiage, primarily motivated by alleviating profound boredom through novel experiences—such as using a cellphone or interfering in Crowley's plans. This ennui is so intense Crowley installed anti-suicide mechanisms to prevent self-destruction from apathy. Aiwass exhibits no fear of death, threats, or loss of power or status. As a transcendent being from the "Pure World"—the bottommost layer of existence untouched by magical or religious phases—Aiwass operates beyond conventional theology, explicitly distinct from biblical angels and inexplicable to Christian doctrine. Its existence represents an element within and outside God's creation, symbolizing potential to disrupt divine fate. Crowley harnesses its power to destroy the layers ("phases") above the Pure World, aiming to eliminate all magic. Capabilities include flight, light generation, plasma manipulation, possession of mediums, and immunity to mental control. Automatic defenses render it nearly indestructible, regenerating even if its core (a shifting triangular prism) is damaged. Its wings manifest independently, bypassing abilities like Accelerator's vector control. Unimpeded by earthly constraints in outer space, Aiwass can unleash full power. Aiwass plays a pivotal role in Crowley's conflict with magic factions. It confronts Accelerator after GROUP uncovers the DRAGON codename, revealing its millennia-long rebirth cycle. During battle, Aiwass taunts Accelerator about Last Order's fragility and Aleister's plans, prompting Accelerator to sever the local Misaka Network. Though briefly dispersed, Aiwass reforms via its defenses and directs Accelerator to seek help in the Elizalina Alliance. Later, it debates Crowley, contrasting Aleister's efficiency obsession with the "value" exemplified by Touma, Accelerator, and Hamazura. Aiwass reappears during global conflicts like World War III, influencing events through indirect guidance. Its actions include facilitating Kazakiri Hyouka's transformation and departure to Russia. Numerically associated with 93, Aiwass reflects its link to Thelema—the philosophical system from the Book of the Law—underscoring its role as a cosmic keystone in occult cosmology.