|Home world:||Planet X|
|First Appearance:||Mirrorman Episode 51 "Farewell Mirrorman"|
Subtitle: Horned Beast (角獣 Kakuju)
- Height: 52 m
- Weight: 55,000 t
- Origin: Planet X
Dead King was formed when five Invaders merged under the light of their spacecraft. Spit a flame from the mouth. Initially, he appeared in urban areas and fought with Mirrorman but later fled underground.
After that, with Eletrikzaurus, he tried to destroy the anti-gravity device developed to move Planet X away from collision with Earth. They confronted Mirrorman who appeared to stop them. In the end, after being weakened by a Mirror Knife in the mouth, he was killed by the Silver Cross.
Powers and Abilities
- Flames: Dead King can breath a deadly stream of fire from his mouth.
- Heat Deprivation: Dead King can absorb away the opponent's thermal energy via the horns on his head.
|Mirrorman Kaiju & Seijin|
|Iron | Kitty Fire | Darkron | Multi | Noppera-bō | Inbera | Kitty Fire II | Gold Satan | Iron II | Multi II | Invaders | Gravity Machine | Zailas | Shinjuku Rose | Gold Satan II | Noah | King Zaiger | Iron III | Kitty Fire III | Zailas II | Jabala | Kinder | Chamelegon | Aroza | Big Eye | Sphenodon | Darkron II | Taigan | King Wonder | Androsaurus | Coldon | Haebun | Gokibura | Mothgojira | Dustpan | Snake King | Harigojira | Killergon | Gorgosaurus | Mayasaurus | Arigeida | Killersaurus | Pair-Mons King | MoleKing | Smoke Ness | Pair-Mons King β | Gorgosaurus β | Mayasaurus β | Halley Jack | Androsaurus II | Androsaurus Jr. | Magumagon | Zangani | Shadow Mons | Teroringa | Invesaurus | Ghost | Boasaurus | Black Gon | Red Mons | Giranda | Borezaurus II | Iezu | Eletrikzaurus | Dead King|