Nerogiras (ネロギラス Nerogirasu) is a Kaiju from the Fireman series, appearing in episode 9.

Subtitle: Hitman Monster (殺し屋怪獣 Koroshi-ya Kaijū)



Nerogiras first appeared killing the second Stegorus with ease, ripping its head from its body. While feeding on Stegorus, SAF stumbled upon it within their submarine. They opened fire. This made Nerogiras angry, and he hurled the carcass at the vessel, causing it to make an emergency surface.

Determined to deal with the beast before it could attack humanity, S.A.F. located it just as it killed another monster. Nerogiras made its journey to land where the self-defenses forces unleashed everything they had upon it. However, no weapon could bring down Nerogiras. Misaki transformed into Fireman with the Fire Stick and battled it, but the tides were turned when Nerogiras sprayed his Red Slime at the hero. Left blinded by a jet of blood to the face, Fireman was unable to get back up from the ground as the Kaiju turned its attention toward humanity once again.

Using the last of his power, Fireman rose to feet to continue the battle. He blasted off Nerogiras tail with the Fire Laser, as Nerogiras turned around, Fireman launched his Fire Flash. The flames eventually engulfed Nerogiras, who then exploded violently.



  • Height: 48 m
  • Weight: 31,000 t
  • Origin: South Pacific Ocean
Powers and Weapons
  • Strength: Nerogiras is surprisingly strong, being able to take down multiple monsters and rip them to pieces.
  • Blood Spray: Nerogiras can fire jets of bright red blood at opponents to blind them.
  • Adept Swimmer: Nerogiras is a adept swimmer.







Fireman Vs. Nerogiras

Fireman Kaiju
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 | Tyrasaurus | Dorango | Alien Tran | Tyrannodon | Lanosaurus | Alien Velder | Tyrasaurus II | Long Neck | Alien Atla | King Zauras | Alien Sulpher | King Zauras II | MukuMuku | Makunosaurus | Gagango | Alien Gagango | Double God | Death Torosaurus | Alien Prima | Destrosaurous | Alien Green | Green Giller | Harmonigan | Alien Virenus | Gadorasaurus | Blacker | Black Satan | Alien Emusa | Bemutan | Devilsaurus | Bemusa King | Spegz | Speguzu Jr. | Dark Mander | Object X
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