Subtitle: Horned Beast (角獣 Kakuju)
Four days before Planet X would collide with Earth the anti-gravity apparatus was going under repairs from Eletrikzaurus's attack. Five invaders ambushed Kyotaro and Asako in a building before one of their space ships appeared in Tokyo. The five Invaders grouped together and a green beam from the space ship hit them, turning them into the monster Dead King who quickly destroyed the building. Kyotaro used a bathroom mirror to become Mirrorman with Asako witnessing what had happened. Mirrorman kicked Dead King down on top of a double decker highway. Once the monster got up both of them were unable to gain the upper hand on the other. Mirrorman led Dead King to a field where he quickly lit it on fire with his mouth flames. After the hero threw him DeadKing quickly burrowed underground. Dead King would then team up with Eletrikzaurus to attack the repaired apparatus when Planet X was about to collide with Earth in the next three hours. Both monsters were quickly knocked down by a missile barrage from the Jumbo Phoenix although the Invader armada arrived immediately after. As SGM was distracted, both Dead King and Eletrikzaurus continued toward the apparatus only for Mirrorman to attack them in his final battle. Eletrikzaurus was shoved back and Dead King was grabbed by his tail and thrown into him. Eletrikzaurus held Mirrorman in place with his claws so Dead King could bash him with his tail only for SGM to knock him down with more missiles. After Mirrorman destroyed Eletrikzaurus, Dead King was quickly assaulted once he got up. Dead King used his mouth flames which the hero countered with the Mirror Knife into the monster's maw. Dead King was quickly destroyed with the Silver Cross just as Mirrorman ran out of energy.
- Dead King's roar is a stock roar from the Redman series.
- Height: 52 m
- Weight: 55,000 t
- Origin: Planet X
- Powers and Weapons
- Forehead Horn: Dead King has a large horn on his forehead he can use to impale foes.
- Flames: Dead King can breath a deadly stream of fire from his mouth.
- Burrowing: Dead King can burrow at high speeds.
- Spiked Tail: Dead King has a tail armed with spikes on the end of it similar to a stegosaurus.
- Heat Deprivation: Dead King can absorb away the opponent's thermal energy via the horns on his head.
|Invaders | Iron | Kitty Fire | Darkron | Multi | Noppera-bō | Inbera | Kitty Fire II | Gold Satan | Iron II | Multi II | Gravity Machine | Zailas | Shinjuku Rose | Gold Satan II | Noah | King Zaiger | Iron III | Kitty Fire III | Zailas II | Jabala | Kinder | Chamelegon | Aroza | Big Eye | Ozmar | Sphenodon | Darkron II | Taigan | King Wonder | Androsaurus | Coldon | Haebun | Gokibura | Mothgojira | Dustpan | Snake King | Harigojira | Killergon | Gorgosaurus | Mayasaurus | Arigeida | Sea Killersaurus | Pair-Mons King | Smoke Ness | Mogura King | Pair-Mons King β | Gorgosaurus β | Mayasaurus β | Halley Jack | Androsaurus II | Androsaurus Jr. | Magmagon | Zangani | Shadow Mons | Teroringa | Invesaurus | Ghost | Boasaurus | Black Gon | Lisa Okano | Red Mons | Giranda | Boasaurus II | Iezu | Eletrikzaurus | Dead King|
|Mirror Fight Kaiju|
|Mirror Fight||Iron | Kitty Fire | Darkron | Noah | Aroza | Zailas | Multi | Inbera | Kitty Fire II | Gold Satan | Iron II | Multi II | Gravity Machine | Invaders | Gold Satan II | Coldon | King Zaiger | Jabala | Kinder | Chamelegon | Sphenodon | Darkron II | Taigan | Ozma | Big Eye | King Wonder | Androsaurus | Dustpan | Snake King | Harigojira | Killergon | Arigeida | Sea Killersaurus | Pair-Mons King | Gorgosaurus β | Mogura King | Invesaurus | Shadow Mons | Eletrikzaurus | Dead King | Boasaurus | Teroringa|
|Mirror Fight 2012||Alien Reguran | Iaron | Dorigorus | Dorako | Aroza|