Mysterious civilization from planet Thasus. The Thasians Noncorporeal life-forms, cared for young Charles
Evans after his parents were killed in a transport crash. They gave him extraordinary mental powers so he could survive, but those powers
ultimately made him unable to function in human society, so the Thasians were forced to return him to Thasus after his rescue in 2266 by
the crew of the science vessel Antares.
TOS "Charlie X" ; Star Trek Encyclopedia II