Golems

Monstrous creatures made of stone and steel. They were formerly humans that tried to go against the Cael with the power of technology, but the Cael defeated them and decided to turn them into what they are now. They were banished to the northern mountains of North Terra by the remaining humans who were horrified by what they had become and as such they mistrust any human or any of the other races and tend to their own affairs as the fourth race.