Vetronians are the citizens of Vetronia. The name comes from the word Vetronia, which comes from VeteranCraft. Everyone who joins the game starts in the world of Vetronia, therefore being a Vetronian.
Players started becoming Vetronians once the old world switched over to Vetronia in September, 2011. Vetronians have been hard working humans since they created Vetronia, making the world what it actually is.