Krarg

The Krargs are a race of brutish, mineral-like creatures employed by (and possibly created by) Dr. Skagra. Their bodies are based on crystalline coal and they can be artificially assembled in seconds with the appropriate machinery, which seemingly condensates them from a kind of green vapor. They are immensely stronger than most humanoids and are capable of withstanding powerful energy discharges.

Appearances

 * Doctor Who season 17 - "Shada"