Kaiser Hades (カイゼルハデス Kaizeru Hadesu?, 1-33) is the series principal villain, a demonic figure armed with sword and shield whose goal is to become the ruler of the universe by destroying the only two planets whose power opposed him, Earth and Riser. 450 years ago, after wiping out the Riserians' Planet, Kaiser Hades and his fleet battle Noulan's Fleet in a battle for Earth that ends with him crash landing to the Earth during the time of the Feudal Era and sealed by Nolun herself within Kamishiro Mountain using the 7 Stellar Plates as key points to maintain the seal through constellation of Orion with the key-plate placed on Hades himself. By present day, Dr. Zora who eventually begins to destroy the Stellar Plates to undo the seal found Hades. Though revived, the injury he received from Glen forces Hades to leave in his battleship into subspace, summoning Bachuss and his Death Commandos to kill the Justirisers while sending Demon Knight to Earth.
But once his plan to destroy Earth with the Magnesheldar and Sonic Crusher, Hades decides to kill the Justirisers personally to obtain their JustiPower and Demon Knight's RiserPower to become unstoppable. But when his plan is foiled during his fight against Shirogane, Hades enlarges into his true form. But Ryuto's appearance leads to Hades' demise by JustiKaiser. However, prior to his death, Hades sends his power to Daruga.