In the long and strange history of Red Dwarf – spanning thirty years and two television channels, surviving the departure and return of one of its leads, the permanent departure of one of its creators and fifteen years of being terrible before suddenly, inexplicably, blessedly becoming good again – it’s always been, at its heart, an odd couple sitcom. It takes extreme versions of the Felix and Oscar archetypes and drops them into a high-concept sci-fi premise. Dave Lister (Craig Charles), a disgusting slob, is the last man alive after spending three million years in stasis aboard the Red Dwarf mining ship. Arnold Rimmer (Chris Barrie), an anal-retentive coward, was one of Lister’s crewmates, who the ship’s computer revives as a hologram to keep Lister company. The computer picks Rimmer because he’s the person Lister exchanged the most words with in his time on Red Dwarf, not factoring in that all of those words were antagonistic.
Even as Red Dwarf became more and more of an ensemble – there’s Cat (Danny John-Jules), the end result of three million years of evolution from Lister’s pregnant cat, Kryten (Robert Llewellyn), a service robot the Red Dwarf boys rescue, and the ship’s computer Holly, who is sometimes Norman Lovett and sometimes Hattie Hayridge and sometimes entirely absent for seasons at a time – the dynamic between Rimmer and Lister remained the show’s beating heart. (Which is one of the many reasons the season where Rimmer leaves sucks.) They bicker endlessly, and are at times astonishingly cruel to one another. But the arc of the show is their becoming best friends: not because either of them “develop” or become better people, really, but because they get to know one another inside out. They are, after all, the only two human beings left, even if one of them isn’t technically alive.