Macra

"No one on the Colony believes in Macra! There is no such thing as Macra! Macra do not exist! There are no Macra!"

First Regular Appearance	Last Regular Appearance
The Macra Terror	Gridlock

When the Second Doctor and his companions visited a human colony, it initially appeared a place of great joy. It wasn’t long before this was exposed as a façade.

When a colonist, Medok, was presented as a deviant and criminal for abandoning happiness, he warned of horrible creatures like insects who move about at night in the dark. During the curfew, the Doctor discovered these creatures, the Macra, are real. It transpired these giant crustaceans have powerful hypnotic powers and had brainwashed the colony to mine poisonous gases, essential for their survival.

The Doctor masterminded an uprising, with an explosion seemingly destroying the Macra. However, after billions of years, it proved that the Macra had survived, albeit with an evolutionary decline.

Beneath the motorway of New New York, the Macra fed on the traffic fumes. With their giant claws, they hunted any cars and humans who dared venture onto the fast lane. The Tenth Doctor defeated them once again by opening a roof over the motorway, allowing the whole undercity to escape, thus depriving the Macra of essential gas and food.