RedBot RedBot
Redbot is a good friend to Brody he met on the Galaxy Warriors ship. He always reassures him when he is in doubt and is always prepared to help him when he is in trouble. It was discovered he wrote a blog about his adventures with the Rangers but fibbed a lot. A publisher made a book of his stories but when it was discovered they weren't true, he wasn't so popular anymore. Redbot discovered it was better to tell the truth.

Mick Kanic Mick Kanic
Mick Kanic is the Rangers' shape shifting friend who worked as a mechanic on the show Galaxy Warriors and later the mentor of the Ninja Steel Rangers. Ten years before Brody was captured, Mick was a resident of the Lion Galaxy, but was sold into slavery by the Royal Family, separating him from his family. Because of this, Mick became resentful of the Empire. He became the school's shop teacher and cherished mentor for the Rangers. He became a Red Ranger when Brody hit the Nexus Prism. When Galvanax was destroyed, he returned home. He returns to Earth to help the Rangers. He gets brainwashed by Madam Odius to create the Doom Signal. He eventually is rescued and decides to stay on Earth with the Rangers.

Victor Vincent Victor Vincent
Victor Vincent is an athletic achiever with a rather brazen and obnoxious attitude. Though popular, not everyone likes him. He does appear to hold sway over certain members of the student body, such as Monty, who acts as his right hand and even does his homework for him. He and Monty audition for a show that ends up being Galaxy Warriors. They are forced to entertain until the Rangers recruit them to save the citizens. Victor then gains his 50th award.

Monty Monty
Monty is your stereotypical nerd, as seen by him constantly being forced by Victor to do whatever he wants. He admires and adores Victor. He does have a tendency to blurt out things he shouldn't. Monty acts like a right-hand man to Victor, but is actually the brains of the duo. They are forced to entertain until the Rangers recruit them to save the citizens.

Principal Hastings Principal Hastings
Principal Hastings is a school principal of Summer Cove High School where the Ninja Steel Rangers attend. She is a strict but fair school principal.

Mrs. Finch Mrs. Finch
Mrs. Finch taught as a math and home economics teacher at Summer Cove High School. She is fair and caring. When Sarah thought the first part of a test was easy and didn't study for the second part and didn't do well, Mrs. Finch gently told her she should always study and be prepared.

Dane Romero Dane Romero
Dane is the original Ninja Steel Red, independent of the others who would eventually be Ninja Rangers. Ten years later, after destroying the Red Ninja Power Star by Brody, Dane came back and became one of the two additional Ninja Steel Red Rangers. In his high school years in Summer Cove High School, Dane earned a Summer Cove High championship trophy. 20 years later after he graduating, he fathered two sons, Aiden and Brody. He trained them in the ways of the Ninja, as well as their signature Romero family song. As the Prism was encased in Ninja Steel, Dane stripped it and kept the peeled steel. He was somehow able to reach into the Ninja Nexus Prism's hard exterior and take the Ninja Nexus Star. He believed he was chosen by the Ninja Nexus Prism to be its guardian. Galvanax, Ripcon and Madame Odius attacked Brody in hopes of getting the Prism. He tasked Aiden to hide until his return, giving him the tin with the Ninja Steel in it.

When Madame Odius to brainwash Mick and proceeding the final plan to enslave humanity through kidnapping thousands of them, including Dane and eventually being turned into her loyal servants to prevent the Rangers from foiling her plans earlier. The brainwashed Dane attacks his two sons and Preston keep Odius reaches her plan on using the Nexus Super Star's power, until the Hayley and Sarah save the brainwashed victims and was under attack by the brainwashed Calvin manage to destroy the mind control satellite device on the Galaxy Warriors ship, freeing Dane, Calvin, Mick and the rest of the victims. However, he and the Rangers are too late preventing Odius achieving the power of Dark Nexus Super Star, with the Rangers prepare for their true final battle, just as Dane evacuates with Mick.

Aiden Romero Aiden Romero
Aiden is told by his father Dane to keep the Ninja Steel safe while he runs outside to save Brody from Galvanax, Ripcon and Madame Odius. Though Aiden managed to escape from Galvanax's crew, his father suddenly disappeared after splitting the Ninja Star into six shards, and Brody was captured to forcefully work as Galvanax's slave. Thus, Aiden remained on Earth and stayed with his aunt to have a normal life. He became Levi and was given the Golden Star. Madam Odius kidnapped him and took his memories and gave them to an android. The android pretended to be Brody's brother Aiden. Later it was discovered it was android and Levi was really Aiden.

Princess Viera Princess Viera
She is the princess of the oppressive Lion Galaxy and the new ruler. Due to her upbringing, Viera is under the impression that strength is more important and to crush your enemies at any chance. Although deep down, she had a feeling this wasn't true. It was through the kindness of Sarah that Viera confirmed this. She was saved by Sarah and swayed that thinking and feeling was better. She bestowed the Rangers with the Fire Lion Armor and Fire Lionzord.

Tom Tom