It was initially comparatively popular as it was newly discovered and thought to be the outermost object of the Solar System and made more fictional appearances than either Uranus or Neptune, though still far fewer than other planets.
[1][2] Besides the humanoid civilization in Into Plutonian Depths,[1] it is home to more exotic mist creatures and crystal lifeforms in "En Route to Pluto" and "The Red Peri", respectively.
[6][7][16] It also appears as the site of a research station in Heinlein's 1959 novel Starship Troopers,[16] and an astronaut is stranded on Pluto in the 1968 short story "Wait It Out" by Larry Niven.
[10] In the 1934 short story "The Rape of the Solar System" by Leslie F. Stone, it is a remnant of the former fifth planet Bodia, the destruction of which also created the asteroid belt.
[8][17] In The Secret of the Ninth Planet, Pluto originally came from a different solar system,[6][16] and in the 1973 short story "Construction Shack" by Clifford D. Simak, it is found to be artificial.
[8] The 1984 novel Icehenge by Kim Stanley Robinson features an artefact resembling Stonehenge bearing Sanskrit text being discovered on Pluto, and revolves around the investigation into its origin.
[7][20] In the 2003 short story "The Trellis" by Larry Niven and Brenda Cooper, Charon is attached to Pluto by massive strands of plant matter.