Jack Parsons
Also known as: John Whiteside Parsons, Marvel Whiteside Parsons, Frater Belarion Armillus Al Dajjal Antichrist
American rocket propulsion chemist and co-founder of the Jet Propulsion Laboratory (JPL) and Aerojet Engineering Corporation, who simultaneously led the Pasadena Agape Lodge of Aleister Crowley's Ordo Templi Orientis (O.T.O.) and collaborated with L. Ron Hubbard on the 1946 Babalon Working.