Mysteron

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Mysteron
Captain Scarlet race
The Mysteron city on Mars as seen in the original Captain Scarlet
First appearance	"The Mysterons" (29 September 1967)
Created by	Gerry and Sylvia Anderson
In-universe information
Base of operations	Computer complex on Mars
Type	Sentient computers forming a collective consciousness
Distinctions	Partial control over matter; ability to re-create destroyed beings or objects

The Mysterons are a fictional race of extraterrestrials and the antagonists in the 1960s British Supermarionation science-fiction television series Captain Scarlet and the Mysterons (1967–68) and its 2005 animated remake, New Captain Scarlet. They are the remnants of the original Mysteron race: alien beings that originated in a galaxy other than the Milky Way and maintained a colony on Mars. They are symbolised by ubiquitous, projected green rings of light and the deep bass voice of their human convert Captain Black.^[1][2]

They were voiced by Donald Gray in the original series and Mike Hayley in the remake. In the 2000 animated test film Captain Scarlet and the Return of the Mysterons, they were voiced by Gary Martin.