Baron Diaz has taken over the throne after the disappearance of the King of Varuna; is secretly collaborating with Mephisto. Desperately wants to marry Princess Alexia to claim the throne.

After the tomb is unsealed, Mephisto betrays Diaz and turns him into a mantis monster. Flint defeats the monster and Diaz is returned to normal. Diaz is last seen in the credits apologizing for his evil and in jail with Nunugi.

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