2153 LEGO® Robo Stalker Used SetLEGO 2153 Robo Stalker is a Space RoboForce set released in 1997, containing 280 pieces and 2 minifigures. The model builds a large humanoid robot with a gear driven function that alternately moves the legs to simulate walking. Its head section detaches from the main body and features a large rear rocket booster, allowing it to operate as a separate flyer. The set reflects the RoboForce subthemes mechanized exploration concept within classic LEGO