energy that is created when humans are in despair to resurrect their leader, Daimaou GrenGhost. : Jamanga's "King of Demons" who fought Master Ryukendo long ago and lost enough energy to regress into a green orb-like egg hovering in the eternally black sky of the area where the Jamanga armies reside. Only when enough Minus Energy, brought about by negative human emotions, is collected, can he be revived. Though he was successfully revived, emerging from his egg to evade Ultimate Ryukendo, GrenGhost was in a larval state and attempt to fully mature at the metal factory, but was easily killed by Ultimate Ryukendo. However, GrenGhost's soul survived and absorbed Worm to create a new human-like body until he possess enough excess power from Ultimate Ryukendo taping into the Power Spot to rip out of his host and assume his true moth-like form before being destroyed by the Madan Warriors' final attack. : Jamanga's monster-maker, who creates Demon Beasts from the Madan Keys. He performs the menial work, such as resurrecting Rock Crimson and telling Lady Gold not to sit on his demon creation pedestal. After his friend RockCrimson was killed, Worm revealed that he knew of the Ultimate Keys and hid the fact to protect his position. With the truth exposed, he was almost killed by Lady Gold and Baron Bloody, were not for the piece of Rock Crimson on his person. While performing Rock Crimson's funeral, he invited Ryukendo and gang out of his friend's final wish, seeing the true nature of humans. But to save face as a demon and not suffer the wrath of the Jamanga, he revoked his friendship with RockCrimson and defeated the Madan Warriors singlehandedly, now even more bent on solely reviving GrenGhost and nothing else. Now driven insane by his newfound conviction, Worm allowed himself to become GrenGhost's new body, only to meet his end once GrenGhost was powerful enough to assume his true form, tearing Worm's body to pieces in the process. : A swordsman for Jamanga. Though he swore loyalty to GrenGhost, Jack Moon serves him because he's stronger than himself. Jack Moon's ideal were that the strong rule, refusing to destroy a foe he considers to be weaker, citing such actions as a waste of his time and energy. However, Jack Moon's demonic side has pleasure in attacking the weak. Though Ryukendo originally saw him as his rival, he came