Ninjago: All About "SEASON 4" (VOTING CLOSED) - YouTube
SNEAK PEEK : “LEGO Ninjago: Season 4 Crystallized– Part 2"
S4E9. The Greatest Fear of All - LEGO® NINJAGO® Videos - LEGO.com for kids
Amazon.com: LEGO Ninjago: Masters of Spinjitzu: Rebooted Season 4 (DVD) : Torsten Jacobsen, Erik Wilstrup, Kevin Hageman, Dan Hageman, IRENE SPARRE, WIL FILM, Trylle Vilstrup, Paul Dobson, Brent Miller, Vincent Tong, Kirby