|Home world:||Planet Earth (Fireman universe)|
|First appearance:||Fireman Episode 3: "The Mysterious Spaceship"|
|Latest appearance:||Fireman Episode 9: "A Challenge from the Deep Sea"|
|Affiliation:||Alien Meteor (controller)|
Subtitle: Huge Sword Dragon (巨大剣竜, Kyodai Ken Ryū)
- Height: 80 m
- Weight: 43,000 t
- Origin: Sanriku Peninsula
Stegorus was a type of stegosaur that became mutated after eating radioactive nodules and lived in the sea peacefully. One day the stegosaur woke up not to harm anyone only that Stegorus was starving. Then a Alien Meteor duo saw Stegorus and decided to mind control it by using two antenaes lodged into Stegorus' brain as a plan for the Alien Meteor dominate the earth. Stegorus now mind controlled began attack villages and bridges making him a no longer peaceful animal but a violent brute! Stegorus began attacking the Marine Army with its flames. Then one of its targets was Daiskue riding the SAF plane and crash landed forcing him to turn into Fireman to fight the Stegorus as the dinosaur's flames empowered him! Fireman got up and fought Stegorus. Fireman seemed to have the upper hand but Stegorus' tail choked Fireman and then Stegorus' electric plates left Fireman at a weakened stance! Ultimately at last chance Fireman used his Fire Cross to send Stegorus back into the sea for recovery.
For several days, Stegorus was asleep until the Alien Meteor controlled the stegosaur and woke Stegorus up. SAF set up missiles in case Stegorus was still hostile. As Daiskue had no idea where the last Alien Meteor was, he had no choice but to turn into Fireman to fight of Stegorus. Fireman got Stegorus in a head lock and chopped the mind control antennas off! On accident SAF sent a radioactive nodule sent to the now peaceful Stegorus making the stegosaur get shot by the SAF missiles. Fireman protected Stegorus until the last Alien Meteor killed Stegorus. Fireman was saddened and left the Stegorus at the ocean. Fireman as Daiskue told the SAF captain not to interupt the dead Stegorus' peace. The SAF team left a memorial for the peaceful dinosaur leaving Stegorus deep in their hearts.
A second Stegorus appeared and was killed by the monster Nerogirasu, its head ripped from it's body.
- Stegorus' whole existance in episode 2 was similar to the scenario with Toho's monster, Titanosaurus in Terror of MechaGodzilla.
- Stegorus is one of several dozen Stegosaur inspired monsters from Tsuburaya.
- Stegorus is the first monster to take three episodes to defeat as Birdon came later.
Powers and Weapons
- Electric Plates: The plates on Stegorus' back can conduct electricity.
- Fire: Stegorus can fire a deadly stream of flames from his mouth.
- Adept Swimmer: Being semi-aquatic, Stegorus can swim at moderate speeds.
- Deadly Tail: Stegorus is equipped with a tail deadly enough to choke Fireman.
|Fireman Kaiju & Seijin|
|Dorigorus | Dorigon | Stegorus | Alien Meteor | Jurasairous | Planet Gomerus | Spacer | Kinokurages | Twin Tail | Kumagorus | Nerogiras | Gudon | Stegorus II | Rodoguros | Alien Baranda | Baranda V | Scoradon | Alien Barogu | Terasaurous | Dorango | Alien Tran | Tyrannodon | Lanosaurus | Alien Velder | Terasaurous II | Long Neck | Alien Atla | King Zauras | Alien Sulpher | King Zauras II | MukuMuku | Makurosaurous | Gagango | Alien Gagango | Double God | Death Torosaurus | Alien Prima | Destrosaurous | Alien Green | Green Giller | Haromongan | Alien Virenus | Gadorasaurous | Blacker | Black Satan | Alien Emusa | Bemutan | Devilsaurus | Bemusa King | Speguzu | Speguzu Jr. | Dark Mander | Planetship X|