OMG! You guys!
Thanks to Leandro's script, not only was I able to convert all my .costumes in one fell swoop.
But, I was able to extract characters from demos I ran from two large events. The first being a massive gathering at AP, in which tentacles were fought. The other being The Immortal Game event on the Beta server.
First, I was able to find a lot of Praetorian NPC names, which I'll post once I've cleaned them up. Second, I might be able to find the model names for the Beast Mastery pets. And finally, I can post a list of all available characters I do have, in case some people need them.
Thanks Leandro!