The Hitchhiker's Guide to the Galaxy President; the depressed robot Marvin the Paranoid Android; and Trillian, formerly known as Tricia McMillan, a woman Arthur once met at a party in Islington and the only other human survivor of Earth's destruction thanks to Beeblebrox' intervention. The first radio series comes from a proposal called "The Ends of the Earth": six self-contained episodes, all ending with Earth's being destroyed in a different way. While writing the first episode, Adams realized that he needed someone on the planet who was an alien to provide some context, and that this alien needed a reason to be there. Adams finally settled
The Hitchhiker's Guide to the Galaxy scripts, and having Alan Bell involved are all offered as causes), and the second series was never made. Elements of "Doctor Who and the Krikkitmen" were instead used in the third novel, "Life, the Universe and Everything". The main cast was the same as the original radio series, except for David Dixon as Ford Prefect instead of McGivern, and Sandra Dickinson as Trillian instead of Sheridan. Interview with Sandra Dickinson on 1st June 2018, where she talks about The Hitchhiker's Guide to the Galaxy. Segments of several of the books were adapted as part of the BBC's "The Big Read"