Going solely by the game, they are in fact humans. One can, for whatever reason, operate an artifact of some kind. The other can, for whatever reason, interpret what the first sees. We have to take their word for it, for the most part, because within the original game there is no contradictory information presented. If they were badguys, well, they would have harmed Trent and not helped him.
By Vanilla FL, there is no super official Das Wilde. In fact, our Nomads are not regular FL Nomads at all. There are no hybrids or anything.
Base Freelancer is not a complex game. Badguys are bad, goodguys are good. This scene was just an out of place, unexplained bit of "Ohhh, lookit, magic!"
The freelancer story was was serviceable and had a few clever moments, but overall it was not GREAT writing. It's like Star Wars. The movies only show so much, and our forums are the rest of the expanded universe. It causes problems if you try to fit the expanded universe back into the core movies.