|“||You're like an annoying piece of sand under my shell!||„|
|~ Crustaceo when enlarging himself for the first time.|
Crustaceo is a Rinshi who holds the spirit of a hermit crab. He serves Jellica, and was the main antagonist of the episode "One Master Too Many".
He is voiced by Chris Stewart.
Crustaceo was a Rinshi with strong armor and weaponry that included a drill on his right hand that could shoot energy blasts. He was summoned by Jellica, who ordered him to create a hole in the ocean to create a tornado-like whirlpool. In the first battle with the Rangers his whirlpool was destroyed by Master Finn.
Later, Crustaceo attacked Casey, but was defeated by the Ranger's new Shark Sabers. When other rangers came, Crustaceo grew, but in his giant form was still defeated by the Shark Animal Spirit. However, he used his ability to control zords and made the Shark Animal Spirit attack the rangers. In the third and final battle with the Rangers, Crustaceo again fought with Casey.
As with their previous battle, Casey defeated him with the Shark Sabers, and when he transformed into his giant form, he was defeated for good by the Jungle Pride Megazord with the Shark Animal Spirit.
Crustaceo is a cunning and unpredictable Rinshi who wants to defeat the rangers at any cost, but is genuinely loyal to Jellica.