I added 2 new ideas for antagonists:
1.) I could port over the Dragonstorm scientists and experiments from
Darwin's Soldiers. They want Dr. Zanasiu and his group dead.
As for the challenge they pose: the scientists have no morals and will kill anyone in their path and they have access to military grade weaponry. They are assisted by their experiments who are biomechanical beings capable of using psionic powers (pyrokinesis, electrokinesis, telekinesis and the like.)
2.) Another bounty hunter, this one is after Deimos.
It is hinted that someone in the military is after Deimos in this conversation at the end of the Pelvanida Arc:
"Deimos! Get out of the base immediately! There's someone who's trying to kill you and he's among the reinforcements."
In fact there could be 2; I'm pretty sure Chong's bounty hunters would not want to cooperate with the ones after Deimos.
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As for the name... I choose
Insane Cafe 3: Curse of the Hotel--------------
On a side note: I noticed that RPs are VERY easy to novelize. If I ever have the time you may (very slim chance) see a little novel written on this and placed on this site.
On another side note: I just noticed that I used the trope Badass Normal. I mean, Dr. Zanasiu, Dr. Kerzach, Rime, Strut, Deimos and Zachary have no magical powers or that special armor and yet they manage to hold their own and prove a valuable asset.