#vagnosaurus

The many-limbed sea-serpent 

from Bernard Heuvelmans take on classifying “sea serpent” sightings

Vagnosaurus - Deep-Sea Poison Monster

Made for the PS2 game Godzilla: Trading battle

Said to be born from still living dinosaur tissue in seabed rock that fused with various sea life after tectonic activity brought it into contact with them.

Honestly , a bit out there even for Godzilla series

But a kaiju that just assimilates whatever tries to parasitize it, mutating and twisting them to be beneficial symbionts...that captures the imagination. 

Jyarumu

Jyarumu is the name of a purple-colored kaiju that appeared in the Japan-only Playstation-only game called Godzilla Trading Battle. The monster, along with the other original monsters from the game, have not appeared in any film or video game since. Jyarumu was either dead or in suspended animation in Siberia, but the ice it was caught in melted due to global warming and the creature was resurrected. For some reason, Jyaramu can fly instead of just glide, as it appears to not have any flight-capable wings. The creature also releases a toxic freezing gas when agitated. Jyarumu also has brutal melee capabilities, utilizing his massive horn and brute strength to topple down opponents.

Razin

Razin is a monster that appeared in the Japanese, PlayStation-only video game Godzilla Trading Battle. Razin has not appeared in anything since that game, and neither have any other of that game's exlcusive monsters.

Razin is an armored plated kaiju that has an opening in his armor infront of his chest. It makes him look like a juvenile Destoroyah and/or Legion. This massive bug-kaiju is a creature was developed to solve world hunger problems, but it broke free. It is a shapeshifter, plus it can fire a stomach beam and can launch projectiles from its pincers. Razin also has the ability to form a devastating energy ball. Razin can absorb objects and beam weapons into his chest and use the stored energy to fire a powerful beam (much like the Mechagodzilla 2's Plasma Grenade).

Vagnosaurus

Vagnosaurus is a kaiju featured in the Japan-only, PS1 game Godzilla Trading Battle. Vagnosaurus is presumed to be an ancient creature. She was capable of constricting and lashing out at her victims using her tentacles. Vagnosaurus can drain the energy from enemy kaiju through her tentacles. Vagnosaurus also had the ability to create some sort of poison beam. Vagnosaurus also uses her massive bulk to battle foes, body slamming them.

Shiigan

Shiigan is a kaiju in the game Godzilla Trading Battle. His name comes from Gigan since they both had scythe hands, spikes on their back and a similar head. This insect/Gigan hybrid is the result of an alien substance mutating zooplankton. Shiigan has the abilities to let out a poisonous fluid spray from his mouth and the power to fire energy blasts from his tail.

Komodithrax

During a romantic cruise in Alaska, Nick and Audrey's ship is attacked by a Giant Turtle. They end up on a deserted island where they are attacked again by the Giant Turtle but this time they're saved by Komodithrax, a mutant Komodo Dragon. It ended up that Komodithrax and Zilla were mates and there was a giant egg in their nest. Unfortunately, Commander Hicks arrives and has orders to air strike the island and take out any monsters on it. Komodithrax and the giant egg fell into a fissure. Komodithrax was originally supposed to be a female Godzilla, but this was changed because the producers did not want another Godzilla in the series.

Orochi

Orochi is a giant eight-headed dragon that is famous in Japanese culture. Toho created two versions of the creature, one in the Showa series and another in the Heisei series. There's also Yamata No Orochi from Onmyoji II.

Yamata no Orochi (八岐の大蛇, Yamata no Orochi? "big snake of eight branches"; often called Orochi or the Eight-Forked Serpent in English) is a serpent-like creature in Japanese mythology. In the ancient Japanese scripture, the Kojiki, after Susa-no-Ō is expelled from Heaven, he encounters two Kuni-tsu-Kami ("earthly deities") near the head of the Hi River (簸川, hi-no-kawa?) in Izumo Province. They are weeping because they have had to give the Orochi one of their daughters once every year, and now they must sacrifice their eighth and last, whose name is Kushi-inada-hime.

The monster is described as having eight heads and eight tails and eyes as red as winter-cherries. It is so long its body extends over eight valleys and eight hills, its belly is always bloody and inflamed, and its back is covered with hikage (clubmoss), hinoki (Japanese cypress), and sugi (Japanese cedar).

Susa-no-Ō asks for Kushi-inada-hime's hand in marriage, and then transforms her into a comb (kushi) which he places in his hair. He then asks her parents to brew some sake that has been refined eight times, and then build a round enclosure with eight gates, each with a platform and a sake vat. They fill the sake vats and wait, and sure enough the Orochi appears. It dips a head into each vat, and is soon intoxicated, allowing Susa-no-Ō to cut it into pieces. When he cuts the middle tail, his sword is chipped, and there he finds the legendary sword, Kusanagi-no-Tsurugi.

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