The Lego Ninjago Movie - Cast. 1  Dave Franco as Lloyd Garmadon, [6] the Green Ninja, Lord Garmadon and Misako's son, and Master Wu's nephew. 2  Justin Theroux as Lord Garmadon, [1] an evil warlord, the father of Lloyd, the husband of Misako and the brother of Master Wu. 3  Michael Peña as Kai, [6] the hotheaded, red Ninja of Fire and Nya's brother.