The Bloody Grotto is a cave hidden behind the waterfall at the spring in the Fleeting Forest on Mechagon Island. Bookie Longshot can be found with two of Bondo's Bouncers at the entrance. The cave serves as a fight club with PvA enabled. Every 30 minutes, starting at the top of the hour, Bookie will place down the Fight Club Treasure Chest for adventurers to fight over.
- Patch 8.2.0 (2019-06-25): Added.