Two interviews with Kostanski
Movieweb https://www.youtube.com/watch?v=nSAjt_BoEeY (17m)
Practical-ly Perfect: Writer/Director Steven Kostanski on the Inspiration Behind His Titular Demon and More for PG: PSYCHO GOREMAN
https://dailydead.com/practical-ly-perfect-writer-director-steven-kostanski-on-the-inspiration-behind-his-titular-demon-and-more-for-pg-psycho-goreman/