The World Shapers ( comic story ) The World Shapers was the final regular " Doctor Who Magazine " comic strip to feature the Sixth Doctor . It featured the death of Jamie McCrimmon , a fate which , , has not been contradicted in any medium . It has also attracted attention because it was written by legendary comic scribe Grant Morrison . It was a Mondasian Cybermen origin story which showed that the Cybermen evolved from the Voord . These origins conflicted with most of the other origin stories given for the Cybermen , including " Spare Parts " and DWM ' s own " The Cybermen " . However , " The Worldshapers " was specifically referenced in the " The Doctor Falls " as one of many origins of the Cybermen which all coexist in the Doctor Who universe . Summary . After a trip to Marinus , the Sixth Doctor is convinced to visit an old friend , but this will be Jamie McCrimmon ' s final adventure . . . Plot . Part one . The Sixth Doctor , Peri Brown and Frobisher follow a distress signal to a watery planet that the Doctor recognises as Marinus , although it is now apparently deserted . The signal is coming from another TARDIS . They find an elderly , dying Time Lord who mutters " Planet 14 " before expiring . As he was on his last regeneration , his body breaks down into its constituent molecule s , though the Doctor notes that it happened very quickly . The late Time Lord ' s TARDIS informs them they were sent to Marinus to investigate violent disturbances in the space - time continuum . Frobisher moults rapidly and Peri ' s hair and fingernails grow ; the Doctor notes that time has been accelerated . The mention of Planet 14 jogs the Doctor ' s memory . He dimly recalls an adventure from his second incarnation . He decides to visit Jamie McCrimmon to see if he would know . As they depart in the TARDIS ( observed by a group of Voord ) , a worldshaping spaceship prepares to land , piloted by Deedrun and Maxilla . They note that the previous planet they shaped was Planet Thirteen . . . Part two . The TARDIS has arrived in Scotland in the 18th century , and the travellers are escorted by Dugald to visit " Mad Jamie " , who has been labelled as crazy after the Battle of Culloden , claiming to have visited the moon and star s . Having miscalculated by about 40 years , they ' ve arrived to find Jamie an isolated old man living alone in a run - down shack . Jamie ( who had been trained by the Doctor to resist the Time Lords ' erasure of his memory ) recalls the mention of Planet 14 by the Cyber Controller in their dealings with the Cybermen ' s attempted invasion of Earth via the London sewers . He begs the Doctor to take him with them , and they depart in the TARDIS before the bewildered eyes of the villagers . They arrive on Marinus only a week since their departure , but in that time the vast oceans have been drained . They encounter Maxilla , now rapidly aged , gasping for help and claiming that " it ' s all gone wrong . " They turn to find themselves surrounded by a party of Voord , who bear some uncanny resemblances to Cybermen . . . Part three . They retreat with Maxilla into the safety of the TARDIS . Maxilla tells how the Voord had captured the Worldshaper and used it to rapidly evolve . His partner , Deedrun , was killed in the process , but Maxilla partially shielded himself with a time shield . The Voord are evolving into Cybermen . The Doctor realises the peril the Cybermen would pose with the Worldshaper . He resolves that the machine must be destroyed . Leaving Peri and Frobisher behind in the TARDIS , the Doctor , Jamie and Maxilla home in on the Worldshaper . Maxilla is stunned to find it unguarded , but runs into a protective field surrounding it which ages him to death . Jamie , however , sacrifices his life by plunging his sword into the heart of the Worldshaper . An enormous burst of temporal energy engulfs the entire planet ( though the Doctor escapes to the TARDIS ) , causing millions of years of geological development to pass very quickly . Once it subsides , they emerge from the TARDIS to find a pair of Time Lords waiting for them . The Doctor now recognises the planet as Mondas . The Time Lords order the Doctor and his party to leave , despite the Doctor ' s insistence they have the chance to stop the Cybermen ' s development before they can threaten the galaxy . As the Doctor angrily departs , the Time Lords reflect that in five million years ' time , the Cybermen will evolve beyond corporeal form into a disembodied benevolent race , becoming the most peaceful and advanced people in the Universe . They agree that the millions of years of bloodshed in the interim are worth " the ultimate salvation of sentient life . "