When the Third Doctor arrived on their world, the Vogans asked him to transport the Crallicans from the ship to the planet's surface in his TARDIS, offering him a substantial reward for doing so. The Doctor pretended to agree, but knew that the Vogans would double-cross him. He secretly reprogrammed their robots to break the Crallicans' conditioning, then had a robot return the Vogans' bomb to their control center. When the Vogans tried to destroy the Doctor's TARDIS, they destroyed themselves. (COMIC: The Vogan Slaves)