Cole

Cole, the Ninjago Master of Earth, is the son of performer Lou and the late Master Lily. After his mother's death, he ran away from a prestigious performing arts school to become a warrior, eventually being recruited by Wu atop the tallest mountain to join the original team. Cole inherited his strength and elemental powers, becoming the "heart and soul" of the team. Born to Lou (part of a quartet) and Lily, a previous Elemental Master of Earth, his father sent him to the Marty Oppenheimer School of Performing Arts. However, Cole left, lying that he was attending while actually training. Cole was found by Master Wu at the top of the highest mountain, where he was seeking a new challenge. As the Master of Earth, he possesses incredible strength. Initially, there was tension because they handled their grief over Lily's death differently, but they reconciled after Lou learned of Cole's heroism. He became a ghost for a period in the series, strengthening his character and emotional depth. Cole was a teenager when he first joined the team and remained, along with the others, in a perpetual "grown-up" teen stage for much of the series.