Macra
The Macra were giant crustaceans that fed on unclean gases which were poisonous to humans. They resembled crabs and would consume humans when possible. They eventually fell into evolutionary decline turning into mindless creatures.
Biology
There were two known types of Macra, the original which were sapient and the later devolved predators of New Earth.
Sapient Species: These were larger than humans which were able to hold a human in one claw. They were stocky in build, had large eyestalks, large claws with a second set beneath the mouth and were a dark brown colour.
Predator Species: These were much larger in size to their sapient ancestors. They had gigantic claws, large enough to hold an entire New Wearth car. The rest of the body was smaller in proportions with glowing eyes on thin stalks and six spindly legs. They hunted by movement and showed no sign of intelligence.
Appearances
The Moonrise (TV)
The Macra Terror (TV)
Gridlock (TV)