Ah shit, I just checked and they never made the third. That explains why I haven't seen it yet. The franchise seems to have bankrupted two companies and is no more. There was a prequel comic though. Apparently some VFX artists sued for copyright ownership of some assets they created for the production. Despite prevailing, the defense costs did the company in.
It's so much fun. Genuinely terrible but in a very tongue in cheek, doesn't take itself seriously at all, kind of way. All the actors are clearly having a great time and it's soo funny.