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Vault of the Cyborgs was an episode of Professor X which the Seventh Doctor thought was particularly good when he originally watched it in the 1960s. He changed his opinion when he watched it later in his life. (AUDIO: Klein's Story)
Behind the scenes[[edit] | [edit source]]
With Professor X serving as equivalent to Doctor Who within the Doctor Who universe, Vault of the Cyborgs is a clear analogue to the serial The Tomb of the Cybermen. Professor X's analogue to the Cybermen have been alternately referred to as either the Cybertrons (PROSE: Escape Velocity) or the Cybs. (PROSE: Synthespians™)