Mechon 612
From Tardis Wiki, the free Doctor Who reference
Mechon 612 was a Mechanoid stationed on the planet Hesperus where the Mechanoids had been preparing for human colonisation for centuries, and ended up defending it from a Dalek invasion to that end. During the battle, 612 was summoned by Mechon 84 to join it and units 179 and 212 to replace Mechon 803. (PROSE: War of the Daleks)