Author of Complete Secret Cipher of the UFOnauts and The Grail Within. Occultist and UFOlogist since 1960, twice honoured with the coveted "UFOlogist of the year" award by NUFOC and cofounder of the National UFO conference, one of the longest running UFO-oriented conventions in the word. Allen is also a ceremonial magician, Free Illuminist, and interviewee on the paradigm breaking documentary, Hellier.

Allen H Greenfield has been a guest on 2 episodes.