Multiple realities
(covers information from several alternate timelines)

The Halkans were a humanoid civilization with the unusual quality of having a history of total peace. In 2267, the Halkans refused to open negotiations with the Federation to allow them to mine dilithium from their planet, out of fear that one day these materials would be used for acts of violence.

The Halkans of the mirror universe were also a peaceful race, who preferred to die rather than allow their dilithium to be taken by the Terran Empire. (TOS: "Mirror, Mirror")

This appears to be one of the rare examples of races being virtually identical in both universes.
According to the non-canon novel Dark Mirror, the homeworld of the Halkans was Halka.

List of Halkans

External link

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