In the Wild Arms series, there is a recurring optional boss known as Ragu O Ragula, made as a challenge for people who have completed the game, even sporting the name The King of Monsters and The Master of the Beginning and the End. In the 5th installment, Ragu O Ragula is redesigned in such a way that its clearly based on Zetton even with its eyes. When defeated, the Zetton looking Ragu drops a powerful item known as the Omega.