Nepthu was released in 2013 as part of the MOTUC line and is based on his "one off" appearance in the 1980's Filmation He-Man and the Masters of the Universe animated series.
Nepthu is unique in that his origins are based solely in the Filmation series. He was an original villain that never had a corresponding figure. Nepthu has been an in demand fan favourite for decades.
*Some minor card wear*