The Ninja prison numbers are the 2016 Skybound Lego set numbers featuring that character. For example, Cole is 70599, which is "Cole's Dragon." The six ninja have consecutive numbers representing sets Ninjago sets released in early 2016. Kai's prison number is 70600 for the Ninja Bike Chase, Lloyd is 70610 Sky Shark, Jay is 70602 Jay's Elemental Dragon, Zane is 70603 Raid Zeppelin, and Nya is 70604 Tiger Widow Island.