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"All of you, you're just crushing our hopes!"

―Captain Hiura yelling at JADF Soldiers, after they killed Mazalgas.

Mazalgas (マザルガス Mazarugasu) is a pitcher plant-like Kaiju that appeared in the TV series, Ultraman Cosmos. He was later possessed by the Chaos Organism and becomes Chaos Mazalgas (カオスマザルガス Kaosu Mazarugasu). He appeared in episode 51.

Subtitle: Nautral Enemy Monster (天敵怪獣 Tenteki Kaijū)


Ultraman Cosmos

A monster that hails from space, Mazalgas arrived on Earth as a meteor. As it crashed, Chaos Organism appeared and tried to control the creature, but absorbs it, revealing to be Chaos Header's natural enemy. Back and forth, Mazalgas appears in random places and having short battles with Chaos Organism. During these battles, EYES and the Japanese Self Defense Force are arguing of whether to kill Mazalgas or let him live because of him fighting Chaos Organism. EYES wants Mazalgas to live so Cosmos can make be used for good and the SDF wants him dead since he's a monster. Soon enough, Mazalgas starts threatening humans and starts to try and kill them, until Ultraman Cosmos comes onto the scene and the two giants fight. However, during their fight, the soldiers fire their missile into Mazalgas, weakening the monster and giving the undigested Chaos Organisms a chance to escape and possesses Mazalgas, thus transforming him into Chaos Mazalgas. Afterwards, cosmos goes into Corona Mode then goes into Eclipse Mode and has the advantage against the monster. He manages to beat Chaos Mazalgas into submission, and attempts to purify them again, but the wounds they sustained in battle, both against Cosmos and the J.S.D.F., were too great, and the monster died.

  • Mazalgas's appearance is based on a mushroom, an owl, a squid and a pitcher plant.
  • Mazalgas's roar is a modified Melba roar.
  • Chaos Mazalgas's roar (like almost all Chaos Header monster forms and infected monster forms) is a combination of synthesized roars of the monsters, Golza and Gatanothor.


  • Height: 58 m
  • Weight: 75,000 t
  • Origin: Space
Powers and Weapons
  • Meteor: Mazalgass can turn his body into a meteor and fly through space.
  • Mazaru Bomb (マザルボム Mazaru Bomu): Mazalgas can fire blue energy blasts from his mouth. Unlike other blasts, this will explode in the air, sending a shower of small blasts raining toward the ground and exploding.
  • Energy Absorb: When needed, Mazalgas can absorb most types of energy into his head and repel others he does not wish to absorb.
  • Chaos Chimera (カオスキメラ Kaosu Kimera): Mazalgas' body possess an enzyme which enables him to digest the Chaos Header.
  • Burrowing: Mazalgas can burrow underground in a moderate speed.
  • Tail: Mazalgas can use his tail for bashing enemies.

Chaos Mazalgas
  • Height: 60 m
  • Weight: 75,000 t
  • Origin: Near JADF's Base
Powers and Weapons
  • Destruction Beam (破壊ビーム Hakai Bīmu): Chaos Mazalgas can fire a missile-strength energy blast.
  • Tail: Chaos Mazalgas can use his tail for bashing enemies.



Ultraman Cosmos

Ultraman Cosmos Kaiju
Ultraman Cosmos: The First Contact Alien Baltan (Basical, Shirubyi) | Don Ron | Clevergon
Ultraman Cosmos Chaos Header | Lidorias | Chaos Lidorias | Golmede | Chaos Golmede | Spittle | Igomas | Chaos Bug | Mogrudon | Mienin | Gamoran | Small Inculas | Inculas | Yamawarawa | Geshot | Mudon | Ephemera | Waroga | Galbas | Jelga | Jirak | Chaos Jirak | Ghighi | Renki | Alien Migelon | Angrilla | Bolgils | Parastan | Chaos Parastan | Chaos Parastan S | Gelworm M | Gelworm P | Imitation Ultraman Cosmos | Gragas | Alien Srayu | Guinje | Chaos Header Iblis | Zaranga | Baby Zaranga | Eligal | Chaos Eligal | Chaos Header Mebut | Clevergon | Chaos Clevergon | Golmede Beta | Neldorand | Chaos Neldorand | Reycura | Ragstone | Mahagenom | Taildas | Chaos Taildas | Alien Beryl | Helzzking | Neldorand II | Chaos Neldorand II | Puratea | Exter Raider | Sydevakter | Delgoran | Chaos Delgoran | Sol | Taildas Mechalator | Alien Nowar | Neldorand Mechalator | Ghighi Dr. XX01 | Mugera | Alien Kyulia | GiriBanes | Waroga II | Alukela | Snow Stars | Vadata | Mazalgas | Chaos Mazalgas | Sangelu | Alien Carpcis | Arados | Ragstone Mechalator | Tablis | Mitoru | Gamoran II | Kawanoji | Gruanfan | Giragas | Alt-Helzzking | Dolba | Chaos Dolba | Eligal II | Chaos Eligal II | Chaos Darkness
Ultraman Cosmos 2: The Blue Planet Parastan | Scorpiss | Sandros | Reija | Alien Gyashi | Shirubyi
Ultraman Cosmos vs. Ultraman Justice: The Final Battle Gloker Pawn | Gloker Mother | Mienin | Lidorias | Golmede | Don Ron | Bolgils | Gloker Rook | Gloker Bishop | Alien Gyashi | Shirubyi | Giga Endra | Delacion