I saw the original J.Pretentious Catalog Ads on the Usenet newsgroup talk.bizarre. I believe the first was posted 11 April 1995 by firstname.lastname@example.org (a hurricane triggered by butterfly's wings).
These are my interpretations.
See also Superheroes' Clothes.
©1994-2009 Alan P. Scott. All rights reserved.
Last updated January 25, 2009.