Note: If you zone out of North Gustaberg (S) without checking the ??? or one of the Goblins despawns, the mission fails.
Report back to Hieronymus to complete the mission.
The ??? is located at (I-7). (On the first 'level' of three on the hill. North side.)
The Goblin Picaroons spawn as BLM and WHM with no difference in name, only weapon and spell usage. The WHM wields a staff whereas the BLM wields a dagger.
Others assisting with the fight may also check the ??? after the win for an exp/limit reward regardless of whether they have the mission active. However, if they do not have the mission active, they will not receive Allied Notes or credit for the victory.