Klytode android
From Tardis Wiki, the free Doctor Who reference
The Klytode Androids were used by the Klytode in an attempt to destroy the Earth by exploding them at weather control stations around the world. Their destruction would have led to the release of toxin bombs destroying the planet. When the Doctor points this out, the ‘Androids’ rebel, not wanting to die, they turn on the Klytode and help secure his capture and restraint on Earth.