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Don Ron (ドンロン Don Ron), also known as Don Dragon (呑龍 Don Ryu), is a Kaiju who appeared in the films Ultraman Cosmos: The First Contact and Ultraman Cosmos vs. Ultraman Justice: The Final Battle.

Subtitle: Legendary Drug Klesha-beast (伝説薬使獣 Densetsu Yaku Shijū)


Ultraman Cosmos: The First Contact

An ancient monster from Japan's past, Don Ron was awoken when Alien Baltan came to Earth to conquer it and assure his species' survival. He was revered as a god, and soon enough he went on the offensive. However, it's actions got SRC's attention. After attacking the monster with their jets failed, they introduced Don Ron to ice mist and after a few seconds, he was completely frozen. As it fell to the side, the Shark Defense System unleashed a barrage of missiles on the frozen fiend. With Don Ron fatally wounded, Baltan emerged from the body and continued the quest on his own, leaving Don Ron in pain. However during in the ending credits, Team SRC carried his body for burial.


  • Don Ron is one of the few monsters to never fight an Ultra, despite going on a rampage.
  • Despite having only a pair of legs, he was surprisingly able to burrow with quick succession.

Ultraman Cosmos vs. Ultraman Justice: The Final Battle

Another Don Ron appeared when a few Gloker Pawns attacked Japan and teamed up with the monsters BolgilsGolmede, and Lidorias to defeat the aliens in response to Musashi/Cosmos defeat under the hands of the invaders and Ultraman Justice. They managed to destroy a few, but the last two combined to form a Gloker Rook and not even their power could withstand such a powerful powerhouse and were forced to retreat.


  • Height: 67 m
  • Weight: 67,000 t
  • Origin: Archeological Park
Powers and Weapons
  • Burrowing: Don Ron can burrow underground despite neither having arms nor extra legs.
  • Burning Fire (猛炎烈火 Mōen Rekka): Don Ron can emit deadly streams of fire from his mouth



Ultraman Cosmos: The First Contact

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