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 (radio series) posthumous cameo role by Adams as Agrajag, edited from his BBC audiobook recording of the novel. In series 3, after the events of series 2 are revealed to be a hallucination, Arthur Dent and Ford Prefect find themselves again stuck on prehistoric Earth. After being rescued, they find themselves transported to Lord's Cricket Ground just before it is destroyed by 11 white robots. Slartibartfast teaches Dent how cricket is based on the history of the worst wars in the galaxy, and the pair travel to Krikkit in order to prevent another war. In the final part, Dent and Trillian meet