Arbitan (species)

The Marinusians were a near-human species native to Marinus. They were pacifists until the Voords forced them to fight. They conquered the Voords by fixing the Conscience of Marinus. (DW: The Keys of Marinus)

One account says that the Mondasians, the near-human race that would evolve into Cybermen, were actually Marinusians. (DWM: The World Shapers)