Wolvermean Wolvermean is a memory-stealing Mujina monster who is the leader and master of the Galactic Ninjas. He wields a Kusarigama and a shield in battle. Wolvermean is the first to go to Earth to fight the Rangers where he ambushes Hayley, Preston, and Brody and steals their memories. During his fight with the Rangers alongside the Foxbots, Wolvermean steals Sarah's memory when she throws herself in front of Calvin. Using the scarecrow technique, Calvin and Levi later steal the memory orbs from Wolvermean as Mick restores everyone's memories. Once that is done, the Rangers fight Wolvermean and the Foxbots. After taking down the Foxbots, the Rangers then fight Wolvermean and his Ninja Clone Technique. Brody then assumes his Lion Fire mode and defeats Wolvermean with the Whiplash Strike Final Attack. Thanks to a unanimous vote from the audience, Cosmo Royale uses the Gigantify Ray to make Wolvermean grow. The Rangers form the Ninja Steel Ultrazord and use the Ninja Ultrazord Blast Final Attack to defeat Wolvermean. While Madame Odius picks up Wolvermean's Ninja Medallion, Wolvermean survives the attack and retreats, stating that it's not over.

Speedwing Speedwing is a peregrine falcon monster and member of the Galactic Ninjas who is the fastest of the bunch.

Rygore Rygore is an Indian rhinoceros monster and member of the Galactic Ninjas who is an expert at surprise attacks and has super-strength. In addition to his medallion that boosts his strength, he also uses a special pair of dice to create various objects to use on the Rangers, like Dice Roll #3 creating a kettle to shoot scalding liquid on the Rangers.

Venoma Venoma is a wasp monster and member of the Galactic Ninjas who has poisonous charms.