Young builders and fans of cool vehicles can stage their own thrilling fantasy duels between good and evil with this action-packed Kai Mech-Bike EVO (71783) action toy for kids aged 7 and up. This collectible building toy features a movable mech action figure and a cool ninja motorcycle that can be transformed into a larger model by adding golden elements and a large golden blade. The ninja toy set includes four LEGO NINJAGO minifigures: Kai and Nya, both armed with swords, the Skeleton King wielding his own NINJAGO sword, and the Skeleton Hunter with a bone axe and a sword. To successfully complete the challenge, children are rewarded with a collectible banner of concentration that can be attached to the ninja motorcycle toy. The LEGO Builder app guides you and your child on a simple and intuitive building adventure. You can zoom in and rotate models in 3D, save sets, and track your progress. The NINJAGO action toys encourage kids to turn off the screen and dive into a world full of imagination and action. Here, they can team up with their brave ninja heroes and combat the forces of evil with a fantastic collection of playsets, including mech action figures, cars, jets, dragons, and temples. This ninja toy makes a great gift idea for children aged 7 and up.