Engage Sonic fans with thrilling adventures in LEGO Sonic The Hedgehog Knuckles vs Dr. Eggman Egg Crusher Mech Construction Set. The set includes a hands-on posable toy mech with an opening cockpit, rotating 6-stud launcher, a massive spinning claw and articulated limbs for interactive play. Two characters, Knuckles the Echidna and Dr. Eggman, are ready for role-play fun, plus, there’s a hoverboard, a catapult toy with 2 boulders, 3 Gold Rings and 2 Chaos Emeralds. Enjoy an easy, intuitive building adventure with the LEGO Builder app, where you can zoom in and rotate models in 3D, save sets and track their progress. Features a buildable