Back in early ’82, the producers of Swamp Thing published a trade ad in Variety that listed all the tie-in merchandise that Warner Bros was planning to release for Swamp Thing, before they realized that it wasn’t a good movie and they shouldn’t bother.
Warners had a full slate of products lined up, as per the Superman movie, which set the standard for superhero movie tie-in merch. The Swamp Thing plans included a line of toys by Mego, Halloween costumes and masks by Ben Cooper, and T-shirts and sleepwear by Strata. Grandreams was going to produce a poster book, Eclipse Enterprises planned to make a souvenir program and an art portfolio, and Crown Books was supposed to publish a hardcover book about the movie’s special effects. Just imagine! It probably would have cost more to produce the book than they spent on the actual effects.
Superheroes Every Day 