However, the Darkness Within miniseries modified the character to be an evil and megalomaniacal entity.
Novelist James Dickey, who worked with him on the unfilmed Alnilam project in 1989, wrote that Guillermin was "one of those megalomaniacal directors who have to be given the gates of Heaven before they consider doing a project".
An avid fan of the science fiction TV series Babylon 5, he appeared in the season 4 episode "Moments of Transition" as a character named "Mr. Adams," who hires former head of security Michael Garibaldi to locate his megalomaniacal dog and cat.
Originally fighting American comics-style costumed crooks, in later episodes his foes became Kamen Rider-style mutated monsters created by his archenemy Dr. Satan (Goro Naya), a former Nazi scientist turned megalomaniacal mastermind also identified in some English language sources as Dr. Saturn.