Full Metal Combat is a collection of mecha based games that all take part inside the Metalverse. Current focus is on the "FMC: Generals" title which is a turn based strategy card game where you play as an invading General trying to take over land important to your nation.
Predator Crab is the most aggressive of the Crabs which makes it very dangerous. It wields twin long range rifles and is very fast. So if you encounter one you have 3 options, hide, fight or die.