In 2004, a group of test-shots made their way onto eBay, among them a redeco of the original Beast Wars Tarantulas/Blackarachnia mold in black with silver spider-legs and salmon-colored robot parts. Later, Hasbro's official website checklist featured listings for two Universe "Halloween Horrorcon Value Packs" that were to be Wal-Mart exclusives... which also likely explains why they were canceled. (Wal*Mart had taken a good half-dozen exclusives and released them more-or-less simultaneously, leading to a huge glut. A lot of other Transformers exclusives were canceled during the Universe era.) One of the sets was "Leatherhide Vs. Blackarachnia"... and thus, the mystery spider was confirmed, as the other test-shots in that group lined up with the name listings given in the sets.