LEGO STAR WARS | Sentinel Droid Battle at Hutt Palace 75451. Join the Mandalorian and Grogu against an articulated Sentinel Droid with firing cannon. Equip Mando with jetpack and blaster, let Grogu open the droid’s back to disable it, then face rival bounty hunter Embo and Keibu. The droid measures approximately 14 cm high.