Vengence

The Vengenance was supposed to be a closed bolt mechanical cocker clone similar to the 03M and Dragunfly. A few prototypes were seen for sale on eBay, but they were not listed as Diablo Vengences. They used the same regulator, feedneck, and odd mounting ASA as the Wrath.

View the pic from the eBay listing.

Information about the Vengence only appeared once more by someone who had bought one off of eBay (His pic of it).

There could be many reasons why the Vengence wasn't released, but the most accepted one is because it would infrenge on WGP patents. Since Dragun lost the suit against K2, owners of WGP, about the Dragunfly mech marker, the Vengence would also end up causing a suit against WGP, and since National Paintball Supply already lost a suit with WGP about their Lightning markers infrenging on patents, they did not want to take another risk.

Reaper

The Reaper was seen as a cheaper, lower end option to the Wrath. It was shown on Diablo's website, and it was called by many an 02. View pic. It was still a FASOR marker, but had bouncebeam eyes, a non clamping feedneck, a body mounted guage, plastic or delrin bolt, and an inline, ASA reg. Diablo never released this gun, and I doubt that it will ever be. However, Oshman's online store used pictures of the the Reaper to describe the Wrath. Pic 1, 2, 3, 4.

In Mid 2005, a site called Rex Paintball annouced that it was going to sell a marker called the Type-R. Judging from the pictures, it was clear that the Type-R was just the Reaper rebadged and named. The early pictures were even of the Diablo Reaper just with the Diablo logo blurred.

In April of 2006, an eBay store appeared with the Type-R and other Rex guns for sale. They are selling for $125. Though one may not be able to buy a Diablo Reaper, they can get very close by getting a Type-R for really cheap.

X and Pro-X

Little is known about the X and Pro-X, but it was believed that they would be TES clones, which would make them low-end, electronic blowbacks. It would be assumed that these would replace the Mongoose line of markers. But since the Reincanation was released prior to this and the BBS came out a few months later, the X and Pro-X were abandoned.