Yeah, Sinistar was who I thought of. I've got his Gravematter pack, but those two (aside from the werewolf D13 was working on for me) were the only two models that I needed for the game I was working on, and they weren't released, or I'd have gotten them already. I'm now working on a separate game, but I was hoping to chat with him about getting the models to work on the first one.
The last I knew they were part of a pack he was working on to release that had models that were FPSC-ready but also could be used in other applications. I believe they were the A-47 Duelist droid and the Bad Hair Zombie. I was around when that topic came up, and at the time, they were not available for download.
EDIT: Here's the thread I was talking about...
http://forum.thegamecreators.com/?m=forum_view&t=84132&b=24
Formerly JMC...