Alien Species


7,556pages on
this wiki
Add New Page
Talk0 Share

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.

Threcaldians (physiological classification TLTU) are a spacefaring extraterrestrial thermophilic species native to the planet Threcald V. They naturally thrive on temperatures around five hundred degrees; breathing superheated steam and using a hot liquid metal for blood. In addition, their gravity and pressure requirements are three times greater than those of oxygen-breathers. When outside their natural habitat, they use spherical, opaque structures, part spacesuit part vehicle. They are also one of the many member races of the Galactic Federation.


  • Star Surgeon by James White
  • Major Operation by James White

Also on Fandom

Random Wiki