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The Humanx Commonwealth is a fictional interstellar ethical/political entity featured in the science fiction novels of Alan Dean Foster.[1][2] The Commonwealth takes its name from its two major sapient species, who jointly inhabit Commonwealth planets and administer both the political and religious/ethical aspects. They are the mammalian Humans of the planet Earth and the insectoid Thranx which dwell upon Hivehom. The Commonwealth is described as a progressive, well-intentioned liberal democracy spanning many star systems, and is somewhat similar to the United Federation of Planets from Star Trek. The Humanx Commonwealth is notable for its portrayal of a human–alien relationship that is not just mutually beneficial but symbiotic, allowing an amalgamation of the two species.

Major speciesEdit


Minidrags resemble flying snakes, measure about one meter long. They are empathic telepaths, or "empaths" who rarely bond to a sapient being they deem unworthy.


The Thranx are an insectoid species about 1.5 meters long when on all six legs. They look roughly like very large praying mantises.


The Ulru-Ujurrians are ursine humanoids described as bear-like and two to three times as tall and broad as a human. They are a peaceful race, that communicate largely by telepathy.



The aboriginal race of the planet Alaspin. They are described as humanoid, roughly half the height of a human male, have ten fingers with three digits on each hand, covered in fur, green eyes and a non-prehensile hairless tail.

  • Quillp
  • Tran
  • Vssey


In 1987 Steve Jackson Games published the GURPS Humanx sourcebook for their GURPS roleplaying game.

Commonwealth StoriesEdit

Stories featuring Flinx (a.k.a. Philip Lynx)Edit

Icerigger trilogyEdit

Founding of the CommonwealthEdit



See alsoEdit


External linksEdit