Aleister Crowley, also known as The Invoker is a great wizard and summoners of monsters from beyond this world. During his childhood, he was a Magistus, and worked together with Rilliona, Endymion and Zoroa who are separated after an unforseen events. Going alone, Aleister perfects his Invocations and from the guidance of his patron Deity Aiwass, Aleister soon able to summon many monsters and even turning into monsters himself. Aleister is an arrogant man, obsessed with knowledge of the unknown.