Director 'Winter, Alex' claims that Mr. T got stressed out and left the set three days before filming was finished. A "scab T" was required for one shot. This stand-in can be seen in one of the cage shots during the battle between the huge Stuey and Ricky. Mr. T was unavailable for re-dubbing the scene with all the milkmen, so Lee Arenberg did the voice-over instead.
Winter claims that the original producer of the film was fired by the studio for making too many weird movies.
Winter claims that Alex Zuckerman's ears are not really that big.
Winter claims that the drool and spit coming from his mouth after Ricky gets transformed was real, caused by the make-up.
Cameo: [Keanu Reeves] the Dog Boy
Keanu Reeves's salary for the film was a million dollars to play Ortiz. It was mostly an uncredited cameo and he did the film as a favor to his friend Alex Winter whom he had worked with on the Bill and Ted movies. The producers of the film thought that Winter was crazy in giving Reeves that amount of money for such as small part.
The film's budget was 12 million dollars, most of which went towards the film's special effects.
The idea for the film came from Alex Winter and Tom Stern's MTV show "The Idiot Box"
The scenes that take place in South America, were actually shot outside Los Angeles with Catherine Hardwicke's production team making the sets look authentic.
Three different special effects companies were involved in completing the effects for the film which took up most of the film's US$12 million budget.
An homage to stop-motion guru Ray Harryhausen can be seen in the effects sequence that first transforms the heros of Freaked when the Cyclops head from The Seventh Voyage of Sinbad briefly appears.
About 11 minutes of footage was cut from the film. Some proof of this can be heard near the end when Skye Daley says "Sorry to interrupt you, Rick, but you've been talking for almost ninety minutes." The footage was cut due to the reactions of test audiences.
A joke cut from the final scene of the movie reveals the large garbage bag in Stuey's hand was supposed to be his "lunch".