LEGO Ninjago, also known as Ninjago: Masters of Spinjitzu, theme was introduced in 2011 and included sets that are based off of original storylines, a TV series and The LEGO Ninjago Movie, a movie based on the theme. The main premise of the Ninjago universe is based around six teenage Ninja, Kai, Jay, Cole, Zane, Nya, and Lloyd, who have been trained by their master Sensei Wu, fighting forces of evil to protect the land of Ninjago. The ninjas use a LEGO inspired fighting style known as Spinjitzu where the fighters spin around and draw on their elemental strengths to become tornadoes of energy and each of the main protagonist characters is aligned to a particular element.