Charles (Robert) Stansfeld Jones (1886–1950), aka Frater Achad, was an occultist and ceremonial magician. An early aspirant to (the 20th to be admitted as a Probationer, in December 1909) who "claimed" the grade of Magister Templi as a Neophyte. He also became an O.T.O. initiate, serving as the principal organizer for that order in British Columbia, Canada. He worked under a variety of mottos and acronymic titles, including V.I.O. (Unus in Omnibus, "One in All," as an A∴A∴ Probationer), O.I.V.V.I.O., V.I.O.O.I.V., Parzival (as an Adeptus Minor and O.T.O. Ninth Degree), and Tantalus Leucocephalus (as Tenth Degree O.T.O.), but he is best known under his Neophyte motto "Achad" (Hebrew: אחד, "unity"), which he used as a byline in his various published writings.

Austin Osman Spare (30 December 1886 – 15 May 1956) was an English artist and occultist who worked as both a draughtsman and a painter. Influenced by symbolism and art nouveau his art was known for its clear use of line, and its depiction of monstrous and sexual imagery. In an occult capacity, he developed idiosyncratic magical techniques including automatic writing, automatic drawing and sigilization based on his theories of the relationship between the conscious and unconscious self. Please note that the rights to material published by Fulgur Press have been reserved and extracts or images from their books and other publications must not be reproduced here.

Robert Anton Wilson (born Robert Edward Wilson; January 18, 1932 – January 11, 2007) was an American author, novelist, essayist, editor, playwright, poet, futurist, and self-described agnostic mystic. Recognized by Discordianism as an Episkopos, Pope, and saint, Wilson helped publicize the group through his writings and interviews.

John Whiteside "Jack" Parsons (born Marvel Whiteside Parsons;[nb 1] October 2, 1914 – June 17, 1952) was an American rocket engineer and rocket propulsion researcher, chemist, and Thelemite occultist. Associated with the California Institute of Technology (Caltech), Parsons was one of the principal founders of both the Jet Propulsion Laboratory (JPL) and the Aerojet Engineering Corporation. He invented the first rocket engine to use a castable, composite rocket propellant, and pioneered the advancement of both liquid-fuel and solid-fuel rockets.

Colin Henry Wilson (26 June 1931 – 5 December 2013) was an English writer, philosopher and novelist. He also wrote widely on true crime, mysticism and the paranormal, eventually writing more than a hundred books. Wilson called his philosophy "new existentialism" or "phenomenological existentialism", and maintained his life work was "that of a philosopher, and (his) purpose to create a new and optimistic existentialism."