"Dammitall! A Full Moon is the perfect night for a sabbath, but Lucifer forbade me from having one! Aarrgh! I'm SO FREAKING HORNY! I'll kill you all to calm myself!"
—Crowley, before unleashing his frustration on Aleph.
Crowley is a recurring character/demon in the series.
Aleister Crowley was an English occultist and founder responsible for the founding of the religious cult of Thelema, a spiritual mystery religion, which might be a form of Satanism.
He practiced Magick, invoked the names of God, angels, demons and pagan deities, and was dictated by an enigmatic spirit named Aiwass to write down occult teachings which would be known as the The Book of the Law, the founding text of Thelema.
He saw himself as the prophet who was responsible for informing humanity that they were entering the new Aeon of Horus. He also claimed to have great proficiency at summoning the demons of the Ars Goetia, even going so far as to claim that he had been able to summon Choronzon but had been unable to control it.
Crowley appears as the human leader of Netzach, a realm in the Expanse. After rambling about how Lucifer won't let him have a Sabbath, he turns into Master Therion and takes his anger out on Aleph. He is eventually killed by Aleph, and drops the Lamed key.
Devil Summoner 2: Raidou Kuzunoha vs. King Abaddon[]
Although he doesn't make a physical appearance, Crowley is the client of two Case Files in the game. The first is Wise Demon Required, being a request for a Thoth. The second is I Can't Contain It, where he asks for an amulet to protect himself from demons and have dream of Sabbaths be made a reality.