While going through Booster's Tower, a switch can be found to open a new area of Booster Pass. After beating Booster Tower and returning to explore Booster Pass' hidden area, there will be a number of enemies called Apprentice. If Mario loses to an Apprentice, a cutscene will play after the Game Over screen of the Apprentice happily cheering that it will become Snifit #4, the 4th bodyguard to Booster. Revisiting Booster Tower after this will reveal a 4th bodyguard (the Apprentice that beat Mario). This can be repeated 8 times, where the 8th victorious Apprentice will be relocated to Grate Guy's Casino as there is no room for an 8th Snifit and Apprentices will no longer spawn in Booster Pass.