[center]Plasmavores[/center][/b]
Plasmavores are a more plasma-based alt of xenos. They would resemble purple centipede-like creatures, except the "larva" looks like a plasma spore from Goon.
Instead of glowing resin, they create "plasma nodes" which replace non-plasma gases in the area with plasma. Plasmavores drain plasma from the environment and convert it to some other gas (not oxygen). The plasma nodes still spread resin around but plasmavore resin is purple instead of the dark grey/blue color.
They also don't have hands or a facehugger equivalent (They can still grab mobs though). Also they're immune to fire (since their bases are constantly filled with plasma and otherwise everyone would just burn them) but they're NOT immune to lasers, and they can only recover plasma by passively consuming plasma gas (so no space hives).
Hunters:
Same abilities as a xenomorph hunter. Has low plasma storage like one too.
Drones:
Can "sting" nested or grabbed players/monkeys to infect them with a plasmavore larva. They can also shape resin like the xenomorph equivalent. (The sting replaces facehuggers for the plasmavores). Can evolve into a queen (but there's no intermediate "praetorian" stage, they just evolve directly into a queen).
Guards:
Higher health, more powerful melee attacks, but slower. Can screech at someone to stun them for a short period of time.
QUEEN:
Has all the abilities of other castes like the xenomorph queen does, but slow and can't ventcrawl. Leads the plasmavores.
Post other hive antags if you have an idea for one.