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A fictional species in the sci-fi television show, Stargate SG-1, the Unas, meaning the "First Ones", are a race of large and primitive humanoids that evolved on the same planet as the Goa'uld.
An Unas first appeared in the episode "Thor's Hammer", in which Jack and Teal'c were trapped by a device called Thor's Hammer on the planet of Cimmeria and had to defend themselves from a Goa'uld-parasitized Unas that had been trapped long previously.
A Goa'uld possessed Unas is even more powerful, with exceptional regeneration abilities that allow them to survive and recover from multiple bullet wounds even without the aid of a sarcophagus.