Argonian (Teenage Mutant Ninja Turtles)

The Argonians are an alien race that existed in Dimension X in TMNT's IDW Universe.

Physiology
They were yellow-pale spiny humanoids.

History
Five years prior to the Trial of Kraang, the Argonians were conquered by the Utrom Warlord. Kraang took pleasure in feeding numerous Argonians to his pet, Flippy.

Source

 * Teenage Mutant Ninja Turtles Dimension X 002 (2017)