Mythosaurs were creatures of gigantic proportions found on the Outer Rim world of Mandalore. The Mines of Mandalore were a mythosaur lair. They were allegedly tamed and ridden by Mandalore the Great and ancient Mandalorians, but they were believed to have gone extinct long before the Mandalorian cataclysm, although at least one mythosaur survived and lived in the Living Waters during the time of the New Republic. Its skull was one of the traditional symbols of Mandalorian iconography, and some Mandalorian armor bore the distinctive symbol.

This mug has a light gray skull on a light brownish beige tumbler exterior with green interior.

This skull mug is one of at least three mugs that have been authorized by Disney, including one manufactured by Geeki Tikis and one created by Tiki Farm for Oga's Cantina.