Arbitan (species)

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

One account stated that the Mondasians, the humanoid race that evolved into Cybermen, were actually Marinusians. (COMIC: The World Shapers)

On Kandalinga, the Voord called the humanoid natives of Marinus "Arbitans". (PROSE: The Fishmen of Kandalinga)