Balok's species
Balok's species were a humanoid race from the Alpha or Beta Quadrant and members of the First Federation. In his initial appearance to the crew of the , Balok, a member of this species, appeared to be a bluish, cat-eyed alien. In his true form, he resembled a Human child.

Members of Balok's species were small, about the height of a Human child, and usually bald, with hair mainly on their eyebrows. Their ears were different from Humans, shaped similarly to that of Vulcans, except they were smaller and had a more flat point on top. ()

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Unnamed species