Mire Beasts are a species of large octopus-like creatures which used to inhabit the "slime bottoms" of the vast oceans of planet Aridia. As the planet was drawn nearer to its binary suns, the oceans evaporated, but the beasts proved capable of surviving on land. Since the remaining wildlife was mostly extinct, the beasts started invading Aridian cities to feed on the population. Their voracious nature and high reproductive rates make them a particularly hard threat to combat.
- Doctor Who season 2 (First Doctor) - The Chase (first two episodes only) (1965)