This article is about a/an mecha in Kishiryu Sentai Ryusoulger.

Ryusoul Gattai KishiRyuNeptune (竜装合体キシリュウネプチューン Ryūsō Gattai KishiRyūNepuchūn) is the mecha for Ryusoul Gold in Kishiryu Sentai Ryusoulger.


KishiRyuNeptune is Kishiryu MosaRex's's humanoid form which it changes into when when Canalo takes command with his own spare RyuSoul. Like KishiRyuOh, KishiRyuNeptune is fast and agile, but skilled in underwater combat. KishiRyuNeptune possesses more power than KishiRyuOh Five Knights as the former overpowered Gachireus. It wields the KnighTrident (ナイトライデント Naitoraidento) tail blade, and can launch the AmmoKnuckles for flying punch attacks. Its finisher is the KishiRyuNeptune Tornado Strike (キシリュウネプチューントルネードストライク KishiRyūNepuchūn Torunēdo Sutoraiku): KishiRyuNeptune jumps in the air and dives back down with the KnighTrident spinning in its hand, piecing the Minosaur and destroying it.

Appearances: Ryusoulger Episodes 16,18


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Kishiryu MosaRex

Kishiryu MosaRex (騎士竜モサレックス Kishiryu MosaRekkusu) is Ryusoul Gold's partner in Kishiryu Sentai Ryusoulger. It is modeled after a Mosasaurus. In its default form, MosaRex is armed with the KnighTrident tail blade, twin four-shot missile launchers (one on its left and right side underneath each fin), and its own massive jaws. Additionally, it is capable of flight. In its KishiRyuNeptune form, it forms the main body, legs, and its missile launchers form the arms while its RyuSoul forms the head.

Like Kishiryu Tyramigo and his brother DimeVolcano, MosaRex can communicate with humans, as well as speak for itself with repetitions of "Mosa!". Much like DimeVoclano, he speaks with full sentences on a regular basis. Due to a tragic event in the past, MosaRex harbours a strong distaste for the surface dwellers and those from the Sea Ryusoul Tribe who interact with them.

Appearances: Ryusoulger Episodes 14-18


The AmmoKnuckles (アンモナックルズ AnmoNakkuruzu) are a pair of auxiliary Kishiryu. They are modeled after Ammonites. They possess trident-style tentacles and form the hands of KishiRyuNeptune.

Appearances: Ryusoulger Episodes 16-18

Additional Formations

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KSR-Gold RyuSoul

Gold RyuSoul

KSR-Gold RyuSoul (Knight Mode)

Gold RyuSoul (Knight Mode)

The Gold RyuSoul (ゴールドリュウソウル Gōrudo RyūSōru) is the personal RyuSoul of MosaRex, used by Ryusoul Gold.

Behind the Scenes



  • MosaRex's name is a mix of Mosasaurus and "Rex", the latin word for "king".
  • MosaRex may be the first Mosasaurus-themed mecha.
  • Curiosly an ammonite mecha appared in the toyline for Dino Charge, another dinosaur-themed series.
  • In a similar manner to Zyudenryu Plezuon, MosaRex is based on a marine prehistoric reptile.



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