Iceron (アイスロン Aisuron) was a choju in the TV series, Ultraman Ace. He appeared in episode 42.

Subtitle: Ice Super Beast (氷超獣 Hyō Chōjū)


Ultraman Ace

Yapool decided to freeze all of Japan so he unleashed his choju Iceron to do it. A boy called to his dead father who became the monster Woo. The two monsters fought until Iceron pushed Woo off a cliff. Hokuto became Ultraman Ace and fought the freezing choju. Iceron was a formidable opponent and Ace's Color Timer blinked due to the severe cold. Ace fired his Metalium Ray and caused an avalanche, burying Iceron alive. Winter of Horror Series - Mystery! The Resurrection of the Monster Woo


  • Iceron has a modified Hedorah roar with a little buzz at the end that sounds similar to Black Satan's roar.
  • Although not physically seen, Iceron is one of the monsters that makes up Beryudora's left arm in Mega Monster Battle: Ultra Galaxy Legends The Movie.
  • Iceron is the first instance of a kaiju's defeat being put off until later, Ace burying the choju in ice since his energy was nearly depleted making it so he had to deal with its threat sooner. Despite this, he is never seen destroying Iceron, leaving its fate somewhat ambiguous and giving it the possibility of returning.


  • Height: 60 m
  • Weight: 34,000 t
  • Origin: Valley of Idatoge
Powers and Weapons
  • Icy Breath: Iceron's breath is an extremely cold mist he uses against stronger enemies.
  • Icy Wind: Iceron can surround himself in an icy wind to confuse humans, but it is useless against enemies that are kaiju size.


Ultraman Ace


Ultraman Ace Kaiju & Seijin
Verokron | Yapool | Chameleking | Vakishim | Garan | Aribunta | Giron Man | Brocken | Alien Metron Jr. | Doragory | Muruchi II | Gammas | Zaigon | Alien Antira | Unitang | Sabotendar | Baraba | Ace Killer | King Crab | Cattle God | Cowra | She-Devil | Hotarunga | Black Pigeon | Android Couple | King Kappa | Zemistlar | Aprasar | Aprasar Fairy | Space Mask | Black Satan | Giant Yapool | Mazaron Man | Yojo | Mazarius | Alien Orion | Sphinx | Alien Hipporito | Lunaticks | Undergroundmon | Gitagitanga | Red Jack | Baktari | Coakes | Bad Baalon | Kaiteigagan | Dreamgillas | Soundgillar | Machless | Snowgiran | Namahage | Alien Fire | Firemons | Alien Steal | Kaimanda | Shishigoran | Iceron | Woo II | Fubugirara | Onidevil | Gasgegon | Daidarahoshi | Hanzagiran | Verokron II | Yapool Woman | Univerlages | Aquarius | Alien Revole | Signalion | Geegon | Alien Simon | Jumbo King
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