Engage Sonic fans with thrilling adventures in LEGO Sonic The Edgehog 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, theres 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, posable mech, a hoverboard and a catapult toy with 2 boulders, plus Knuckles and Dr. Eggman characters The set has a posable mech with a 6-stud rotating launcher, giant spinning claw and articulated limbs The LEGO Builder app guides you on an intuitive building adventure where you can save sets, track your progress and zoom in and rotate models in