Mondasian

Biology
They were very similar to humans, the Cybermen from The Tenth Planet even mention being exactly like humans once.

Technology
The Mondasians had great knowledge in cybernetics.

History
The Mondasians later cybernetically evolved themselves into cybermen because their lifespan was shortening and their species was becoming weaker. Their doctors and scientists created spare parts from cybernetic technology to help extend their lifespan. But they became obsessed with surviving until they removed their emotions, becoming cold heartless robots, only capable of thinking logically.