Cole Brookstone

He is Master Wu's student, the Black Ninja, the Elemental Master of Earth, and the son of the late elemental predecessor Lilly and the Royal Blacksmith quartet member Lou. After his mother died from an unknown illness, his father sent Cole to the Marty Oppenheimer School of Performing Arts hoping to follow his footsteps. Two days later, however, Cole ran away from school and began to send letters to his father to claim that he is actually following the path of becoming a dancer. As Cole climbed the tallest mountain in Ninjago, he first met Master Wu and realized his reason why the former climbed the mountain. With Kai joining the team and meeting his teammates, Wu confirmed that he is the Black Ninja of Earth. He and Kai were the known leaders of the original four Ninja before Lloyd's arrival to become the Green Ninja.

Cole has a muscular body (hence his past as a rock climber, being the strongest of the ninja even without his Elemental Power, though it does give him his super-strength). He has medium length, shaggy black hair and bushy eyebrows, a relaxed look to his eyes.

Cole's default attitude seemed to remain calm and practical. In truth however, Cole lacked direction and purpose. When Wu offered him training as an Earth Ninja, Cole saw an opportunity to make more of himself. Cole is a standard good Samaritan who feels a sense of accomplishment for a job well done. It is not uncommon for Cole to lose sleep due to repeatedly fine-tuning battle tactics.

He also, similarly to Zane, shows a selfless trait when he lets Jay win the battle in the Tournament of Elements so Jay doesn't get his power stolen.

One of his best relatable traits is his obsession with food, especially cake. He is talented at rock-climbing and dancing. Despite that he is extremely determined with culinary arts, he is a terrible chef, according to the Ninja. His favorite color is orange, but he doesn't want to tell anyone about it. He is right-handed. He and Jay are the only two Ninjas known to be gaming gurus.