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Kingsaurus III (キングザウルス三世 Kingusaurusu Sansei) is a dinosaur-like Kaiju that appeared in the TV series, Return of Ultraman. It first appeared in episode 4 of the series.

Subtitle: Ancient Monster (古代怪獣 Kodai Kaijū)



Kingsaurus III is so named for being the third 'King monster' in the series, and is the third Kaiju to feature the term in its name, after Red King and Eleking. King Joe, while also being a 'King', wasn't counted by Tsuburaya Productions in the set, in part due to its status as a robot, but also due to the fact that King Joe's name is a pun, referencing the name of writer Tetsuo Kinjo.


Return of Ultraman

Kingsaurus III is an ancient dinosaur whose species survived the mass extinction at the end of the Cretaceous period, and now feasts on nuclear energy and Uranium-235. Appearing on a mountain, it was quickly confronted by MAT and shot down Hideki Go's MAT Arrow 2 with its highly radioactive U-235 beam. Go called upon Ultraman Jack and a fight ensued. Kingsaurus III's barrier quickly reflected all of Jack's attacks, even the Cinerama Shot, said to be ten times more powerful than the Wide Shot. After the blocking, Kingsaurus advanced; using his horn flashes to blind Jack while stabbing his knee and his waist. Finally, exhausted, Jack collapsed, and Kingsaurus III escaped through burrowing.

In the hospital, Go became horrified of the beast and later escaped the hospital to train himself to jump over Kingsaurus III's barrier and attack it. After training several times with his broken leg, he finally managed to learn the Meteor Kick and was ready to put it in action. Meanwhile, MAT received a telegram signaling that Kingsaurus III appeared at a nuclear power factory. Go soon followed and tried to jump over the beast's barrier. Failing, he called upon Ultraman. Jack looked at the monster that had defeated him. Calculation led him to conclude that all of Kingsaurus's powers came from his horns. Realizing that, Jack used Go's jump to kick off Kingsaurus III's horns. A short beating later, Jack used his Spacium Beam to kill Kingsaurus III once and for all.


  • Suit actor: Toya Takanobu
  • Designer: Ikeya SenKatsu
  • Kingsaurus III uses a slowed down Darii roar, and would later be slightly modified for Nokogilin.

Kingsaurus III

  • Kingsaurus III is one of the monsters that makes up Belyudra's left hand in Mega Monster Battle: Ultra Galaxy Legends The Movie. It can be seen as one of the fingers.
  • The head of Kingsaurus III was modified for the monster, Femigon.
  • In an unused script for Return of Ultraman, it is revealed that Kingsaurus III is actually a monster from the sunken city of Atlantis.
  • Kingsaurus III can be seen at the Monster Graveyard in episode 15 of Ultraman 80.
  • Kingsaurus III's soul, along with Astromons and Silver Bloome's, was meant to make up Grand King but the monsters were dropped for unknown reasons.
  • According to Ultraman Taro episode 40, the battle between Kingsaurus III and Jack happened on the 23rd of April 1946.
  • In a Rebirth of Mothra picture book explaining the origins of the Kaiju Desghidorah, various dinosaurs can be seen charging at the three-headed dragon. Among them were Anguirus, Gorosaurus, Rodan and Gomora. In the distance, Kingsaurus III can be seen overlooking the battle.

Ultraman Orb Chronicle Chapter 5: 'From Rusalka With Love' Arc

Gai with Kingsaurus II's tail

A distant relative of Kingsaurus III, called Kingsaurus II (キングザウルス二世 Kingusaurusu Nisei) appeared in chapter 5 of the Ultraman Orb Perfect Super Complete Works 10 Episode Plan.

Sometime in 1908, the tundra area suffered from a large meltdown, foreshadowing the revival of the Lord Monsters. Kingsaurus II, a monster that was frozen beneath the ground escaped and made its way to the residential area of Lake Paikal. Gai, who was on his way to Rusalka encountered the monster and transformed into Ultraman Orb, fighting and destroying it. Gai was later photographed holding its tail by a local aristocrat while Juggler harvested its card to be used in unison with Super C.O.V. and Pris-Ma to unseal Maga-Zetton.


  • Gai's ancient photo in the TV series was also taken by the same aristocrat.


Kingsaurus III
Kingsaurus III removebg.png
  • Height: 45 m
  • Length: 105 m
  • Weight: 27,000 t
  • Origin: Hakone mountains
  • Weakness: If the horns on Kingsaurus's head are broken off, he becomes completely powerless.
Powers and Weapons
  • Horns: Kingsaurus III has three horns on his face strong enough to stab into the thick hides of Ultras such as Jack.
  • Barb: Kingsaurus III has barbs on his horns, which activate automatically when touched like a jellyfish.
  • Burrowing: Kingsaurus III can burrow at medium speeds underground.
  • Blinding Flashes: Kingsaurus III can fire blue waves of energy that can repel or temporarily blind his foe.
  • U-235 Beam: Kingsaurus III can fire a light red beam of energy from his mouth.
  • Fence Light Wall (フェンス光壁 Fensu Kōheki): Kingsaurus III can create a Force field strong enough to stop the beams of Ultraman Jack. However it only surrounds/protects the front of Kingsaurus III and the top is left open.

Kingsaurus II

Gai holding Kingsaurus II's tail

  • Height: Unknown
  • Length: Unknown
  • Weight: Unknown
  • Origin: Lake Paikal
Powers and Weapons
  • Unknown

Kingsaurus III Ground Type
Kingsaurus III Sub.png

Kingsaurus III was one of the many monsters to appear during the Kaiju Busters series. An alternate form appeared in this game called Kingsaurus III Ground Type (キングサウルスIIIグランドタイプ Kingusaurusu III Gurando Taipu).

  • Height: 45 m
  • Length: 105 m
  • Weight: 27,000 t
  • Origin: TBA
  • Weakness: If the horns on Kingsaurus's head are broken off, he becomes completely powerless.
Powers and Weapons
  • Borrowing: Kingsaurus III Ground Type can burrow at high speed.
  • U-235 Beam: Kingsaurus III Ground Type can also use the U-235 Beam.

Other Media

Ultraman Story 0

Kingsaurus III appears in chapters 5 and 6 of the manga. In his first appearance, he is in a plesiosaur form with paddles instead of feet. Emerging from the sea, he attacked an aquatic human tribe but retreated after Jack's human form stabbed him in the left eye with a sharp branch.

Later, he regenerated his eye and evolved his paddles into feet. He emerged again from the sea and attacked the aquatic human's village. Jack transformed into his Ultra form and started to fight with Kingsaurus III in the sea. He is killed after with the Meteor Kick.

Kaiju Busters

Kingsaurus III was one of the many Kaiju to appear in this game. A subspecies also appeared. The subspecies' name is now called Kingsaurus III Ground Type (キングサウルスIIIグランドタイプ Kingusaurusu III Gurando Taipu).


  • By attacking Kingsaurus III's horn enough times, it will break, restricting him from its special moves.


Return of Ultraman



Return of Ultraman Kaiju
Takkong | Zazahn | Arstron | Sadola | Detton | Kingsaurus III | Gudon | Twin Tail | Gorbagos | Ghostron | Dangar | Stegon | Mognezun | Shugaron | Seamons | Seagorath | Eledortus | Terochilus | Bemstar | Sartan | Magnedon | Beacon | Gokinezula | Zanika | Vacuumon | Kupukupu | Kingstron | Zagoras | Nokogilin | Gronken | Varricane | Yadokarin | Oxter | Plooma | Alien Zelan | King Maimai | Alien Mates | Muruchi | Leogon | Pris-Ma | Draculas | Re-Seagorath | Re-Bemstar | Black King | Alien Nackle | Alien Varduck | Alien Black | Snowgon | Alien Baltan Jr. | Builgamo | Alien Stora | Paragon | Alien Grotes | Kodaigon | Granadas | Alien Centaurus | Robonez | Alien Cygnus-61 | Alien Messie | Alien Zoole | Red Killer | Femigon | Yametaranese | Sasahiller | Alien Ateria | Alien Mysteler | King Bockle | Alien Bat | Zetton II
Ultraman Orb Chronicle Kaiju
'Tree of Life' (Ultraman Orb THE ORIGIN SAGA) Jugglus Juggler | Alien Wraith Psychi | Amate/War Deity | Alien Kanon | Morks | Bezelb | Queen Bezelb | Kugutsu Arstron | Kugutsu King Guesra | Gargorgon | Kugutsu Bemstar | Lidorias | Bolgils | Kugutsu Birdon | Kugutsu Vakishim | Kugutsu Verokron | Psyqueen
'I am the Galaxy's Migrating Bird' Murnau | Jiggle | Dinosaur Tank | Pestar | Gamakugira | Takkong | Gora | Alien Gapiya Sadis | Orlok | Alien Zartana | Alien Nackle Ramon Brothers | Jugglus Juggler
'The Man Who Stole The Black Hole' Jugglus Juggler | Biranki | Gango | Balloonga/Balloonga Bomb
'Fierce Battle! Ishtal Civilization' Jugglus Juggler/Nuru Ra Hotep | Dodongo | Mummy Monsters | Magatanothor
'From Rusalka With Love' Kingsaurus II | Super C.O.V. | Pris-Ma | Maga-Zetton | Jugglus Juggler | Three-meter Aliens | Biranki | Hungler
'The Wandering Sun' (Ultraman Orb) Peguila | Maga-Zetton | Maga-Basser | Jugglus Juggler | Maga-Grand King | Maga-Jappa | Maga-Pandon | Alien Zetton Maddock | Hyper Zetton Deathscythe | Alien Mefilas Nostra | Alien Nackle Nagus | Alien Metron Tarude | Aribunta | Hoe | Ragon Parent | Ragon Child | Gubila | Alien Babarue Babaryu/Imitation Ultraman Orb | Telesdon | Kelbim | Black King | Maga-Orochi | Galactron | Zeppandon | Alien Zelan | Alien Shaplay Katarohi | Bemular (Empowered) | Renki (Crimson Lotus Knight) | Maya | Hyper Zetton Deathscythe (Reserver) | Alien Pitt Myu | Nova | Black Directive | Kamaitadon (Mentioned) | Demaaga | Gomess (S) | Magatano-Orochi
'Space Witch Murnau's Counterattack, Sadis' Return' (Ultraman Orb The Movie: Let Me Borrow the Power of Bonds!) Galactron | Alien Ckalutch | Cicada Woman | Galmess | Hupnath | Jugglus Juggler | Murnau | Alien Gapiya Sadis | Alien Temperor Batista | Alien Hipporit Callisto | Alien Guts Doppel | Alien Serpent | Lecuum | Darebolic | Zeppandon
'Super Sky Great Violent-beast Desastro' Desastro
'Messengers of the Netherworld Mage' (Ultra Fight Orb) Reibatos | Juda Spectre | Demaaga | Mecha Gomora | Vict Lugiel | King Joe | Birdon | Gudon | Twin Tail | Hyper Zetton | Tyrant
'Migrating Birds, Go To The Sky' Biranki | Jugglus Juggler
Ultraman Festival 2016 Alien Baltan | Cyber Mecha Baltan | Zetton Alien Baltan | Zett