Back in 2009 Hasbro released an Ugnaught on the blue and white TLC card.  That Ugnaught has been identified as either this guy, Grugnak, or his buddy Ugloste.  After extensive staring at pictures of Ugnaughts, I’ve come to the conclusion that it was probably based on Ugloste.  But he did come with Grugnak’s lunchbox.  That being said, these two appear to wear the same clothes, so Grugnak would essentially be a head-swap. 

As with Hapnix, any Ugnaught would be welcome- especially on a vintage card.  The actual vintage Ugnaught most closely resembles Yoxgit, who was released as a figure in both the POTF2 two-pack, and as the variant TLC Ugnaught albeit with inaccurate costume details.