Roberts was a member of the human colonial expedition of six sent to Deva Loka to assess its suitability for colonisation. His name was on one of the chairs in the expedition's domed base.

He had left the base in the Total Survival Suit (TSS) to explore the area and, like two others before him named Stone and Carter, (PROSE: Kinda) failed to return. The TSS machine was empty when it was discovered in the jungle by the Fifth Doctor and Adric. (TV: Kinda).

Behind the scenes[edit | edit source]

  • It is never revealed on-screen or in Terrance Dicks's novelisation of the story exactly what became of Roberts and the two other expedition members.
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