Ninja Steel

The Ninja Steel is a unique metal that can be used to make new Ninja Power Stars.

It's origin is unknown, but when the Ninja Nexus Prism came to Earth, Ninja Steel covered the Prism as a crust. Ninja Master Dane Romero proceeded to chip off the metal shell revealing the Prism, with the Ninja Nexus Star inside. When Galvanax arrived to steal the Ninja Nexus Prism, Dane had his eldest son, Aiden, take the Ninja Steel and hide it, with Aiden going into hiding as well (later changing his name to "Levi Weston" to further his cover).

It was later revealed that the Ninja Steel was then placed in a trophy that Dane had once won for his high school, Summer Cove High School. Brody Romero and his friends locate his trophy and have it placed into the base of operations they've built from inside the out-of-order paint booth of the school's car shop.

Mick Kanic, Brody's shapeshifting friend from the Lion Galaxy, had known about the legends of the Ninja Steel for most of his life. When Preston Tien gains real magical powers, Mick explains that the Ninja Steel did indeed have something to do with it. Legend says that the Ninja Steel can magnify ones truest desires.