Encyclopedia Barsoomia Wiki
The information in this article comes from New Adventures on Barsoom and is not written by Edgar Rice Burroughs.

Odarr Rukk was an eccentric from the far north lands where there is ice and snow, and the creator of the Metal Men. According to him there came a melting period in his homeland, and his people were driven underground finding a subterranean ecosystem, and in time his people built a great city in this vast place. Eventually his people grew violent, and the Metal Men were conceived and created, his entire race converted.