Diana Holo is an original character in the Heroes Alliance franchise. She is one of Megamo's top commanders, Josh Holo's cruel and abusive mother, and is the main antagonist of Heroes Alliance Triumphant, alongside with Satan. She is voiced by Maile Flanagan.

Diana Holo as human

Diana Holo as a human, as seen in the flashbacks, as well as Heroes Alliance Triumphant.

Diana Holo as cyborg

Diana Holo as a powerful cyborg, after being rebuilt by Megamo. She was seen throughout Heroes Alliance and Heroes Alliance Forever.

Diana Holo as empress

Diana Holo as an empress, as seen in Heroes Alliance Triumphant when she ruled the world.

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