Hypnotron

Hypnotron
First mentioned in:	The English Way of Death

The Hypnotron was an enemy which the Fourth Doctor recalled having defeated. (PROSE: The English Way of Death)

Behind the scenes

The Aqua Man, Hypnotron, and Steel Octopus.

Among some 250,000 entries, the Hypnotron, created by Paul Worrall, was one of three winners of the Blue Peter's 1967 design-a-monster-competition, along with the Aqua Man and the Steel Octopus. Unlike the later Abzorbaloff, it was not featured in the Doctor Who television series, however, a prop Hypnotron was constructed alongside the Steel Octopus and the Aqua Man. (REF: The Doctors: The Archive)