Representative []
This individual, who appeared on the bridge of USS Enterprise, was a member of a race of non-corporeal, psionically-powerful beings believed to be native to the planet Thasus.
A Human named Charles Evans, the only survivor of a crash landing on the planet Thasus, was given considerable psionic powers so that he could survive on their planet.
After Charlie abused his powers and caused trouble for the crew of the Enterprise, the Thasian appeared as a green translucent, floating Human face. They described themselves as "having taken their form centuries ago," so that they could communicate with the crew. The Thasians undid all the damages caused by Charlie, and transported him from the Enterprise to their own ship and returned to Thasus. (TOS: "Charlie X")