Storytelling Applied - The Game Maker's Companion: Game Development - page 209

Figure 9-5. The Pirate King.
Level Bosses
Besides being shadows , all the bosses found at the end of the levels are all threshold guardians .
That is their sole purpose in the game, but it is still a very important role. They test whether the
player is ready for the next level. One of those is the sheriff of Rogues' Rendezvous (Figure 9-6).
Figure 9-6. The sheriff of Rogues' Rendezvous.