Editing Marvin the Paranoid Android (section)

==Novel series==
A difference between the radio and TV series occurs in the novels when the ''Heart of Gold'' crew arrive on the ancient planet of Magrathea. Marvin inadvertently saves the crew by plugging himself into the onboard computer of a police vehicle, which, when exposed to the true nature of Marvin's view of the universe, commits suicide, taking the two police who were then firing at the ship's crew with it. The crew leave Magrathea on the '' Heart of Gold'', but are teleported summarily to Ursa Minor Beta, where Zaphod's great grandfather, in an apparent fit of vicious humour, forces Marvin to accompany Zaphod on his mission of self-discovery. Marvin subsequently saves Zaphod's life by engaging in a battle of wits with a vicious (yet stupid) automated tank and then is abandoned on the planet Frogstar B when Zaphod is sent to the Total Perspective Vortex. Eventually, the crew arrive at the Restaurant at the End of the Universe (which was built over the ruins of Frogstar B in this continuity) and the story continues as with the TV series.{{fact|date=December 2023}}

In the third novel, ''[[Life, the Universe and Everything]]'', we find that Marvin survived his collision with the sun of Kakrafoon, and was sent back in time by the Improbability Field projected by the ''Heart of Gold'' to be rescued by a scrap metal merchant on Sqornshellous Zeta. The merchant grafted a steel rod to Marvin's now-lost leg and sold him to a Mind Zoo, where excited onlookers would try to make him happy. This made him something of a celebrity on the planet of Sqornshellous Zeta, and he was asked to open the brand new bridge that was meant to revitalise the planet's economy. Marvin dutifully plugged himself into the bridge's opening circuit, and, just like the police computer, the bridge committed suicide, taking the entire gathered crowd with it. Marvin was left in the swamp, his false leg having trapped him in the mud, so he spent just over 1.5 million years walking around in a circle, "just to make the point." He planned to keep walking in a circle for another million years before trying it backwards. "Just for the variety, you understand."{{fact|date=December 2023}}

Suddenly, he is kidnapped by a squad of Krikkit war robots, who are after his leg, a fragment of the key that will reopen their imprisoned world and restart the genocidal Krikkit War. Thinking that Marvin's intelligence will be an asset, they wire his brain into the interfaces of their intelligent war computer. This is a mistake. The once formidable Krikkit robots find themselves overcome with crippling sorrow and depression, and rather than focusing on their mission of extermination, instead sulk in corners doing [[quadratic equation]]s. It is also due to Marvin's influence that Zaphod and the others' lives are spared by the Krikkit robots. Marvin is (presumably) rescued by his friends, who bring him back to the ''Heart of Gold.'' From here his story is unknown.{{fact|date=December 2023}}

Marvin reappears in the second-to-last chapter of ''[[So Long, and Thanks for All the Fish]]''.{{fact|date=December 2023}} Arthur and [[Minor characters from The Hitchhiker's Guide to the Galaxy#Fenchurch|Fenchurch]] find him on the planet where God's Final Message To His Creation is located. He is barely functional, claiming that, due to time travel, he is now "thirty-seven times older than the Universe itself." Every part of his body has been replaced, with the exception of "all the diodes down [his] left side", which have been giving him severe pain for the whole of his existence. Arthur and Fenchurch end up carrying him, enduring the robot's constant abuse, to the God's Final Message viewing station, where they lift him up to see the words of the message: "We apologise for the inconvenience." Astonishingly, Marvin responds "I think... I feel good about it." The lights in his eyes go out and his already-worn circuits completely stop working; Marvin is no more. (In the radio dramatisation, his last words are "Goodbye, Arthur." Marvin's 'death' prompts Arthur to say, "Miserable git!" and then, to his own obvious astonishment, to add, "I'll ''miss'' him."{{fact|date=December 2023}})

However, in the [[The Hitchhiker's Guide to the Galaxy Tertiary to Quintessential Phases|2005 radio adaptation]] of the fifth novel in the series, ''[[Mostly Harmless]]'', in which Marvin did not originally appear, he has a cameo at the end of the last episode alive and well. He explains that it turned out he was still covered by his [[warranty]] agreement and is back to parking cars at Milliways, the Restaurant at the End of the Universe.{{fact|date=December 2023}}