Crustaceous Rex

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Crustaceous Rex
The Crustaceous Rex in Godzilla: The Series
Alternate names C-Rex, Sea-Rex, Sea Rex
Species Irradiated crustacean
Height 70 meters[1]
Length 135 meters[1]
Weight 300 tons[1]
Allies Godzilla*, Giant Bat*, King Cobra*, Cryptocledius*, Queen Bee*, Huge Rat*, El Gusano Gigante*, Cyber Godzilla*
Enemies Godzilla, Skeetera, King Cobra, Mutant Giant Squids
Designed by Fil Barlow
First appearance Latest appearance
Godzilla: The Series
episode 2, "New Family: Part 2"
Godzilla: The Series
episode 24, "S.C.A.L.E."
I've got a hundred bucks on the walking crab cake.

— Victor "Animal" Palotti on C-Rex's fight with Godzilla ("New Family: Part 2")

Crustaceous Rex is a giant crustacean monster who first appears in episode 2 of Godzilla: The Series, "New Family: Part 2."


Crustaceous Rex's name is an amalgamation of crustacean and rex, the Latin word for "king," to emphasize its ferocity and aquatic origins. Its name is often shortened to C-Rex, much like how Tyrannosaurus rex 's name is shortened to T-rex. The name Sea-Rex was used in some concept art and an advertisement for Trendmasters' cancelled Godzilla: The Series toy line, which adds another layer to his name's aquatic references by further implying that the "C" in C-Rex is intended to be a homophone of "sea," making a connection between the monster and water.


Crustaceous Rex is yellow-green in color with a dark green shell on its back with four spikes on it, as well as one large spike at the end of its shell that resembles a stinger. It also has two spikes in front of its arms on both sides. It has two lanky legs with two spikes on its lower arms and large, clawed feet with four claws on each foot, four tentacles on its chest, and two vestigial tentacles on its thorax, as well as two smaller tentacles in front of the tentacles on its chest. It has two black eyes, and a segmented mouth composed of four tentacle-like flaps around a simple, toothless mouth. In "Monster Wars: Part 2," it appears briefly with an erroneous brown color scheme.


Crustaceous Rex is a mutation caused by French nuclear testing in the Caribbean, an origin story implied to apply to most of the series' monsters.


Godzilla: The Series

"New Family: Part 2"

Crustaceous Rex fed on the Jamaican population of Mutant Giant Squids until they were destroyed by Godzilla. It then came to the surface in search of food. Crustaceous Rex proceeded to a nearby town, where Monique Dupre used explosives and flares to try and ward it off. Unfazed, Crustaceous Rex proceeded to a nearby highway and began to devour the newly poured tar on a highway as an alternative to the tar naturally produced by the Mutant Giant Squids. When it approached the next tar patch, H.E.A.T. used it as a lure to bring it to Godzilla. Godzilla then defeated Crustaceous Rex using his atomic breath and forced the creature to retreat.

"Monster Wars: Part 1"

Crustaceous Rex was called from wherever it had been to the Leviathan Aliens' Site Omega, where they began to put into effect their plan to use the monsters to dominate Earth.

"Monster Wars: Part 2"

After spending time buried in the sands of Site Omega, Crustaceous Rex arose with inexplicably regenerated limbs and an erroneous dark brown color scheme. All of the monsters were then sent into the world's major cities to cause destruction. Crustaceous Rex was sent to London.

"Monster Wars: Part 3"

Crustaceous Rex continued its rampage until H.E.A.T. deactivated the Leviathan Aliens' mind control beacon. At that point, it began to attack Leviathan Alien vessels until it was incapacitated by human forces. It was then taken to Isle del Diablo to become a part of a Mutation Research Facility.

"Future Shock"

In an alternate future where the D.R.A.G.M.A.s overran the world, Crustaceous Rex and all of the other mutations on Monster Island were released by Anthony Hicks to fight them off, but were all slain. However, thanks to the efforts of H.E.A.T., this future was avoided.


While living on[Monster Island, Crustaceous Rex and the other mutations were outfitted with inhibitor collars to keep them from fighting each other. During a raid from the terrorist organization S.C.A.L.E., Crustaceous Rex's enclosure was opened, and his collar was disabled. He began to run amok and fight with the other mutations, and was eventually defeated by Skeetera. After the threats of Skeetera and S.C.A.L.E. were removed, Crustaceous Rex and the other mutations were safely returned to their enclosures.


Crustaceous Rex uses its ink blast against Godzilla

Ink blast

Crustaceous Rex can fire a spray of ink from its mouth, capable of blinding enemies.

Tar shot

In the Godzilla: The Series video game, Crustaceous Rex can shoot large amounts of tar capable of immobilizing opponents from its mouth, as well as fling smaller damaging globs with its tentacles.

Physical abilities

Crustaceous Rex has tentacles on its chest for constricting and immobilizing opponents, which was its primary means of attack against Godzilla. It also used its legs as clubs. Crustaceous Rex can suck out the vital fluids of Mutant Giant Squids through its mouth.


Despite having its tentacles severed in "New Family: Part 2," Crustaceous Rex reappears in later episodes with them fully intact, which could point to regenerative properties, or simply a continuity error.


Crustaceous Rex can be easily drawn away by the promise of fresh tar to eat. The creature's tentacles were easily severed after being blasted by Godzilla's atomic breath. Crustaceous Rex could do nothing as it fell off the cliff that Godzilla had destabilized.

Video games

Godzilla: The Series

Crustaceous Rex was a mutation that fed on similarly mutated giant squids and other organisms by pre-digesting them in a tar produced by the crustacean's body before absorbing the nutrients by reabsorbing it. When it began to entrap human swimmers, H.E.A.T. came to investigate them. While they initially blamed the Mutant Giant Squids that Crustaceous Rex fed upon, it soon rose to the surface and proved them wrong. It quickly engaged Godzilla, who had accompanied the research team, and fought by blasting him with large shots of tar from its mouth that immobilized its foe's legs, and also flung smaller wads of it from its body using its tentacles. It tried to flee twice from its mutant foe, but it was ultimately defeated.


Main article: Crustaceous Rex/Gallery.


Crustaceous Rex's roar is a mix between an elk, a bear and a walrus with hissing, growling and roaring sounds.

Crustaceous Rex's roar

In other languages

Language Name Meaning
Flagicon Japan.png Japanese シー・レックス[2] Shī Rekkusu C-Rex
Flagicon Russia.png Russian Крустацеос Рекс Krustatseos Reks Transliteration of English name


  • Crustaceous Rex is one of the few monsters to naturally feed on other kaiju.
    • Crustaceous Rex is one of the few recurring monsters in the series alongside King Cobra and the Giant Bat.


This is a list of references for Crustaceous Rex. These citations are used to identify the reliable sources on which this article is based. These references appear inside articles in the form of superscript numbers, which look like this: [1]

  1. 1.0 1.1 1.2 Toho Kingdom Monster Profile: C-Rex
  2. Godzilla 1954-1999 Super Complete Works. Shogakukan. 1 January 2000. p. 64. ISBN 978-4091014702.


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Godzilla: The Series