In Ninjago: Masters of Spinjitzu Season 4, Episode 2, "Only One Can Remain," the ninja arrive on Master Chen's island, where they navigate a dangerous tournament designed to steal elemental powers. The episode, airing February 23, 2015, sees the team discover Chen's true, dark intentions, featuring the elimination of Karlof and the reveal that Chen holds Zane's ice power. For more detailed information, visit the Ninjago Wiki .