Graveworld 909

From Tardis Wiki, the free Doctor Who reference

Graveworld 909 was one of the graveworlds set up to honour the dead in the Seventh Galactic War. Prospero was the Groudskeeper of the world, running service droids and sonic defences. Some bacteria fell to the world, and over generations, evolved into the Rat People. (COMIC: Onomatopoeia)