Known as the legendary Green Ninja and the Elemental Master of Energy. His primary weapon is a scimitar. He once skipped his adolescence by drinking Tomorrow's Tea.

The Elemental Master of Fire. His primary weapon is a katana. He tends to act before he thinks. He is Nya's brother.

The Elemental Master of Water. Her primary weapon is a spear. She is Kai's sister and Jay's love interest.

The Elemental Master of Earth. His primary weapon is a hammer or a scythe.

A Nindroid and the Elemental Master of Ice. His primary weapon is shurikens. He is capable of feeling emotions. He occasionally chooses illogical methods. He is P.I.X.A.L.'s love interest.

The Elemental Master of Lightning. His primary weapon is nunchucks. He makes a lot of somewhat lame (?) dad jokes. He is Nya's love interest.

The master of the ninjas. He is extremely wise. His primary weapon is a wooden staff (which originally belonged to his father, the First Spinjitzu Master).

Sora's best friend. He possesses no elemental power and taught himself Spinjitzu (which Lloyd says is difficult to learn alone). He can transfer Spinjitzu into objects and throw them (known as Object Spinjitzu).

The Elemental Master of Technology. She escaped from Imperium, a place where technology is highly advanced. She is skilled at creating technological items even without elemental power (though her skill is lower than when using her power). She is Arin's best friend.

A Nindroid, though not an Elemental Master. She is capable of feeling emotions. She is Zane's love interest.