Voiced By: Richard Simpson
Galvanax is the reigning champion of the intergalactic game show, Galaxy Warriors. Galvanax desires to obtain the Ninja Power Stars and sends his warrior contestants to Earth to steal them from the Ninja Steel Rangers. After Victor & Monty develop a magnet that can attract Ninja Steel, Galvanax uses it to steal all the Ninja Power Stars except the Red Ninja Power Star. After the Ninja Steel Rangers reacquire their Ninja Power Stars, Galvanax melts down the Power Stars in his possession and injests them to increase his strength. After being gigantified, Galvanax is destroyed by the Ninja Steel Rangers combining their powers with the Ninja Nexus Prism.
Voiced By: Campbell Cooley
Cosmo Royale is the charismatic host of Galaxy Warriors. He is also responsible for gigantifying warrior contestants and summoning Skullgators. Cosmo is shown to have the ability to flip his face to match the emotion that he is conveying. Cosmo Royale is presumably destroyed when an asteroid made of Ninja Steel collides with the Warrior Dome.
Voiced By: Campbell Cooley
Ripcon is a warrior that works for Galvanax. After learning that the Gold Ninja Steel Ranger was being housed on the Warrior Dome, he is given the task of finding the person responsible and to capture the Gold Ninja Steel Ranger. During one altercation with the Ninja Steel Rangers, he loses one of his horns. Ripcon is tricked by Madame Odius into getting blamed for being the one responsible for sending down the fake Aiden Romero. As punishment, Ripcon is sent to Earth and gigantified to destroy the Ninja Steel Rangers. He inevitably fails at this task and is destroyed by the newly acquired Ninja Fusion Zord.
Madame Odius’ Crew
Voiced By: Jacque Drew
Madame Odius is an adviser to Galvanax. Shortly after coming to Earth, Madame Odius obtains the Gold Ninja Power Star after capturing its owner Levi Weston and housed him in a secret room on the Warrior Dome in order to steal his memories of his life as Aiden Romeo. However, she loses the Gold Ninja Power Star after Levi escapes the Warrior Dome thanks to the Astro Zord. She later sends a robot with the stolen memories of Aiden Romero to masquerade as him in order to obtain the Ninja Steel. However, this fails but she takes advantage of this by blaming Ripcon for sending down the robot in order to silence him. After using the magnet that Victor & Monty developed for her own nefarious purposes, Madame Odius reveals to Galvanax that she was the one working behind his back and not Ripcon. Shortly after revealing this fact, the Warrior Dome collides with an asteroid made of Ninja Steel and she and the rest of the Warrior Dome are hurled into space. However, it is later revealed that Madame Odius survived the collision.
Aiden Romero (Robot)
Played By: Nick Beckwith
This robot is created by Madame Odius and given memories stolen from Aiden Romero in order to gain the Ninja Steel Rangers trust. He eventually finds out the location of the Ninja Steel Rangers base so that he could obtain the Ninja Steel for Madame Odius. However, he is found out by Levi Weston and is destroyed by the other Ninja Steel Rangers blasting him with their Ninja Blasters. After destroying the fake Aiden Romero, Levi Weston regains his stolen memories, revealing that he is the real Aiden Romero.
Voiced By: Adam Gardiner
Voiced By: Estevez Gillespie
The Kudabots are blue robotic soldiers that are used by Galaxy Warrior Contestants as foot soldiers. The Kudabots are also used to do menial tasks on the Warrior Dome.
The Basherbots are blue robotic soldiers that resemble the Kudabots but are more powerful. They are used by Galaxy Warrior Contestants when extra muscle is needed.
The Skullgators are giant crocodile monsters summoned by Cosmo Royale when a monster doesn’t get enough votes to get gigantified.
The Buzzcams are responsible for recording fights for Galaxy Warriors.