Mister Lizard Comic Book Issues
Besides Ralph himself, Mr. Lizard is by far the most popular character ever to appear in RSA. Ralph was introduced to him in Volume 2 Issue 4 "My Summer of Ill Repute". In Volume 3 Issue 26, John Hartman penned a short 4 page story advertising the fact that he would be the writer of a new Mr. Lizard monthly series starting in September 1990, but NOW went belly-up for the first time, and this series was never published.
RSA made a comeback with NOW Comics in 1992, and capitalizing on RSA's success, in 1993 NOW did get around to publishing two Mr. Lizard comics; the 3-D special, and the Mr. Lizard annual. Both came with collectable action figure sponges (yes, sponges). The Mr. Lizard 3-D special came with a Mr. Lizard sponge, and the Mr. Lizard annual came with a Ralph Snart sponge.
It's believed these issues were the first two issues of the planned Mr. Lizard series, and produced sometime during the 11 month hiatus period when NOW was not publishing in 1989 and 1990, but not released until 1993. Although Marc Hansen didn't appreciate the other writers and artists messing with his creations, Hartman's writing isn't too bad.
There was a third issue of Mr. Lizard that had gone into production, which involved a story about Mr. Lizard and Barney the Dinosaur, but was never published.
Mister Lizard 3D Special
Published by NOW Comics May 1993.
Mister Lizard Annual
Published by NOW Comics September 1993.