Thasians

Thasians are a fictional alien race featured in the Star Trek multimedia franchise. They first appeared in the second episode of season one episode of the original Star Trek series entitled, "Charlie X".

Thasians are a sentient race of non-corporeal beings that hail from the planet Thasus. They are creatures of pure psionic energy possessing great power including the ability to mentally control others, project images into the minds of other beings across great distances, telekinesis, molecular dispersal and teleportation.

History
In 2252, a civilian transport shuttle carrying the Evans' family crash landed on Thasus. The only passenger to survive was three-year-old Charlie Evans. The Thasians monitored Charlie and when food supplies ran low, they imbued him with a portion of their power, enabling him to survive Thasos' rough terrain.

Fourteen years later on Stardate 1533.6, a Federation cargo freighter, the USS Antares discovered Charlie Evans on Thasus and took him off world. They found that his closest living relatives were on Colony Alpha V. They contacted the USS Enterprise, which was en route to that sector and Captain James T. Kirk agreed to pick Charlie up and bring him to Colony Alpha V.

A hormonally imbalanced and socially inept young boy, Charlie used his powers to take control of the Enterprise, threatening the lives of everyone on board. When the Thasians discovered this, one of their number appeared on the bridge of the ship in the form of a glowing disembodied green head. The Thasian explained to Captain Kirk how Charlie acquirred his power. They teleported him off of the ship and brought him back to Thasus where they could keep an eye on him.