Where to find in the Toy Box Editor:
- In 1.0, it can be found in the "Buildings" category while in Build View.
- In later editions:
It serves as the location where the characters receive training from Sensei, an NPC that only appears in the Play Set. Pressing the "IN" button on the side deploys a set of punching bags, which are "breakable" in the sense that they are knocked down when hit and then disappear. Pressing the button again retracts the frame.