This one-eyed creature, unfortunately, first appeared in the Classic Who serial ‘The Myth Makers’, hence tragically lost. We don’t have a good picture of The Cyclops, except (according to the recons) the image of a chap with an eyepatch.

Podcast C020 The Myth Makers > > > > > >

The troupe arrives in Troy, where there’s no Helen, Vicki falls in love, and the Doc leaves but one Trojan left alive.