Doctor Who: 10 Most Underrated Villains And Monsters

10. Styggron - The Android Invasion

When fans discuss the best Doctor/companion teams of all time, it usually won't be long before the Fourth Doctor and Sarah-Jane Smith are brought up. And season thirteen, their second series together, is often regarded as one of the best of the entire classic series. Containing beloved greats like Pyramids of Mars, The Brain of Morbius and The Seeds of Doom, the duo go from strength to strength throughout this run of episodes.

But the series' fourth serial, The Android Invasion, is sometimes unfairly characterised as a bit of a misstep. Written by frequent contributor Terry Nation, the only Doctor Who script of his not to feature his iconic Dalek creations, the serial sees the Doctor and Sarah land in a mysterious English village. They soon discover that the village is actually a replica on another world, being used as a training ground for an invasion of Earth by the Kraals, an alien race led by the villainous Styggron.

Styggron and the Kraals have been criticised for being little more than another rubber-suited alien race that want to take over the Earth but this is an unfairly reductive assessment of them. The episode and their sinister plot is genuinely creepy, bringing to mind Invasion of the Bodysnatchers or The Stepford Wives.

And their tragic motivations for conquering Earth, their planet is about to become uninhabitable due to increased radiation levels, makes these monsters of the week far more memorable than your average outer space mooks.