In the Game Boy Advance port of the game, the Helmasaur King makes a second appearance as a mini-boss in the Palace of the Four Sword, a bonus dungeon exclusive to the Game Boy Advance port. This Helmasaur King's mask is green, similar to regular Helmasaurs, but instead of a jewel, this Helmasaur King has an eyeball, similar to the ones that surround Vitreous, in its forehead. The same strategies can be applied to defeat him.