Mutants Revenge is Tiberium Wars mod that adds new Mutants faction to game and two sub-factions for each side of the conflict. This is probably the biggest mod making by the Polish Team...
Mantis is a kind of a parasite, which uses the opponents in order to cure himself. This is obviously lethal in its consequences for Mantis’ potential victims.
Model by Skyrn
How does it use opponents? Grab them and bit 'em? x-D
It stabs them with the front two "Blades", and through them, it sucks the organic matter (mostly blood as it contains all it needs), which it uses to regenerate.