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Killergon (キーラゴン Kiragon) is a Kaiju that appeared in the series, Mirrorman.

Subtitle: Killer Monster (殺し屋怪獣 Koroshi-Ya Kaijū)



One night the Invaders hired a space monster named Killergon to kill Mirrorman, soon finding Kyotaro by himself in a forest. The Invaders challenged Mirrorman to appear at Lake Ashino at noon the next day and Killergon destroyed a nearby transformer before walking away. The next day Jumbo Phoenix located Killergon in the lake with both sides firing projectiles at one other. The killer space monster retreated into the water soon after. At the base the Invaders taunted Mirrorman, believing he was too cowardly to fight and called the SGM for help. The taunting continued in the city, the airy words getting to Kyotaro. He eventually drove to Lake Ashido and transform into Mirrorman and fight. The hero attacked the killer space monster fiercely until Killergon's whip-like tongues shocked him. After Mirrorman threw him, Killergon went underwater to out maneuver the hero, eventually landing two hits with his tail followed by tongue whipping. The Jumbo Phoenix assisted Mirrorman by launching missiles at Killergon, forcing him to retreat once more. That night Killergon his snout horn beam at Jumbo Phoenix when it was pursuing a flying saucer. The monster then went ashore to attack a harbor. Mirrorman soon arrived, his left arm still injured from the previous fight. Killegon managed to overwhelm the hero until he used a new technique called the Mirror Kick which instantly decapitated him.


  • Killergon's suit would be used to make Kemjila.


  • Height: 50 m
  • Weight: 47,000 t
  • Origin: TBA
Powers and Weapons
  • Long Tongues: Killergon has maws in place for his hands which unleash long tongues that can serve as whips.
  • Snout Horn Beam: From the horn on his snout, Killergon can shoot a beam from it.
  • Mace Tail: At the end of Killergon's tail is a mace which he uses to hit his opponents.
  • Electric Tongues: The long tongues that come out of the maws can charge electricity to shock his opponents.


Mirrorman Kaiju
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