According to the book "Phantasm Exhumed," filming on Phantasm: Ravager first began in late 2008 where it was originally envisioned as a spin-off web series about the Reggie character. This webisode footage was eventually expanded upon with new footage that featured appearances by main cast members to become feature-length, and given a limited theatrical release throughout 2016.
With no prior production news, Phantasm: Ravager was announced to the world as a completed project on March 26, 2014. A teaser trailer was released the following day.
(at around 21 mins) The hospital bed scene alongside Reggie Bannister was the last scene Angus Scrimm filmed as the character The Tall Man.
According to Don Coscarelli, Angus Scrimm and Reggie Bannister got into a heated debate over their respective characters' dialogue in the white room sequence.