Nosferachuu: these small, intelligent vampires track prey with a batlike sonar ability. They move entirely by bouncing. (No, this is not supposed to be a pokemon parody, I just couldn't resist the pun. "Chuu" only means the sound a mouse makes, anyway)
Viscerix: large and agile fish-based monsters with bladed tails and thick, chitinous armor. Viscerix are guard-beasts dating back thousands of years. They emit a surprisingly beautiful bird-like song when attacking.
Endo: a rare and reviled spectral parasite that can enter and control the bodies of others. Those housing an Endo find themselves rapidly decaying, physically and mentally. Endo are speedy, seemingly weightless and constantly flickering in and out of visibility.
Verglin: a model almost as old as the Gromory, but a little more specialized. Verglin have an affinity for heavy machinery and are highly skilled in repair and maintanence. They can never resist the temptation of buttons, switches or levers, esspecially when the results could be dangerous.
Host: defective monster. Blind, deaf, and unable to feel pain. Known to spontaneously fall apart.
Urgh: defective monster. Roots itself to the ground and will not willingly move. It gives off an irritating whine and noxious chemical odor when exposed to light.