* ActorAllusion: Doc Frasier (who is played by Creator/DougBradley) of ''Ashes to Ashes'' has [[Franchise/{{Hellraiser}} puzzle boxes]] scattered about his office.
* ColbertBump: The series as a whole got ''much'' more attention after WebVideo/TheSpoonyExperiment did a review of the second movie's ... interesting... video game adaptation.
* HeyItsThatGuy: Noteworthy horror alumni appear throughout the series, specifically [[Film/TheReturnOfTheLivingDead Linnea]] [[Film/NightOfTheDemons1988 Quigley]], Creator/KaneHodder, [[{{Franchise/Alien}} Tom Woodruff Jr.]], [[Film/LeatherfaceTheTexasChainsawMassacreIII R.A. Mihailoff]], and [[Franchise/{{Hellraiser}} Doug Bradley]]. And of course, there's [[{{Franchise/Alien}} Lance Henriksen]].
** One of Pumpkinhead's would-be victims is the teenaged [[Film/{{Superman}} Clark Kent]].
** Another victim in the first film is [[Series/{{Seinfeld}} Todd Gack]].
* WhatCouldHaveBeen: Apparently, the second film was supposed to feature a winged Pumpkinhead.