Doctor Who: EVERY NuWho Villain And Monster Ranked Worst To Best
198. Cybermat
Appears in: Closing Time.
What a nasty, albeit incredibly useful, little bugger. Forget wasting your time on Cyber-conversion factories with all those emotional humans: just send a plague of Cybermats to drain all the world's power, thus plunging everyone into darkness, then divert their vicious gnashers on the population.
After all, we've seen how one was strong enough to overpower Craig Owens and the Eleventh Doctor.