Kaiser Hades (カイゼルハデス Kaizeru Hadesu?, 1-33) is the main villain for the first half of the series, a demonic looking alien armed with sword and shield who leads the hades army and goal is to become the ruler of the universe by destroying the only two planets whose power opposes 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 before her demise. 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.

Justirisers feel the true power of kaiser hades

Kaiser hades as he reveals his true form to battle the Justirisers for the last time

But once his plan to destroy Earth with the Magnesheldar and Sonic Crusher neared completion and bachuss was killed, 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 to destroy them. But Ryuto's appearance summons the Justikaiser which easily over powered him though he wasn't finished yet Shirogane used his full power and finally destroyed Hades. However, just before his death, Hades transported his remaining power to his big brother Majin Daruga.