Barkonian
From Memory Alpha, the free Star Trek reference.
The Barkonians were a pre-industrial society from Barkon IV. Barkonians were humanoid in appearance, with a distinctive patterned forehead.
In 2370, a Federation probe crash-landed on the planet, causing some Barkonians to suffer the effects of radiation poisoning. The Barkonians also had their first contact with alien life, when Lieutenant Commander Data was dispatched to retrieve and salvage the probe's components. Damaged by the probe, Data lost his memory, and spent several weeks living among the Barkonians. (TNG: "Thine Own Self")
