Disguise The worlds leading costume design and manufacturing company brings you this Official Deluxe Kids Lego Ninjago Movie Kai costume.  Lego Ninjago Movie - Kai Kai is the current Elemental Master and Ninja of Fire and Nya's older brother. With Master Wu’s help Kai learned Spinjitzu and discovered his other teammates with whom he embarked on many adventures; battling the likes of the Serpentine and the Stone Army. Kai is the powerful and focused Red Ninja. Become your favourite ninja and practice the art of Spinjitzu in our Lego Ninjago Kai Movie Deluxe Costume. Tunic looks just like Kai's Gi with his iconic symbols. The Size For You This costume comes in sizes Medium and Large see bullet points for more detailed sizing information.