Since 1982 I’ve seen Swamp Thing about a dozen times and I have never seen the poster above. Hulu is using this as the thumbnail for the movie in search. I can’t find anything about the poster online either which is a bit unusual. The depiction of the creature looks a good deal like the actor who played him, the late Dick Durock but the illustration of the iconic Barbeau is really odd.
Durock played the heavy in a wide range of films and television. Check out his filmography here. Durock also played a memorable ‘old man Hulk’ during the Incredible Hulk tv series in a two part episode titled “The First”.
The scenery chewing Louis Jourdan is also here adding gravitas and cartoon villainy. It is an early comic book movie and if I didn’t have eight layers of nostalgia distortion in front of my eyes it may be unwatchable, but since I am not inclined to think critically about such things it is just like a hot cup of cocoa on a snowy day.