I just got Richard Marcej's book "My artwork and designs at Hasbro 1983-1989" and there was a section on Inhumaniods there (Apparently he did the artwork and packaging for the series) In the book there are two of the pictures he did for the 3 new big monsters and theres a photo of the prototype of Ssslither!
Man, I wish they had released these creatures!
Anyway, just though anyone who likes the series would like to know where they can get pictures of these and many different drawings from other lines. His book is released by Baboon Books.
I swear I'll get some pics of the pictures up this time. Originally I was trying to get a copy of the color Ssslither from Mr. Marcej but it seems there were some format problems (Sorry for the year long delay)