Loudstone is stationed in the Flaming Fist Office together with Fist Broko and Fist Callaway, under the command of Manip Cragbender. He is patrolling the office back and forth, occasionally climbing up the stairs in the far corner of the room.
If spoken with, he talks dismissively about Gortash's coronation and the patriars who gathered to witness the ceremony. If Gortash is defeated, Loudstone keeps the same attitude, worried only about his own wages paid.
Your attack summons thorny vines that possibly Ensnare your target.
Ensnared creatures cannot move and take 1d6Piercing damage at the start of each turn. An ally can use their Help action to try and tear away the vines.
↑ His full name is listed in the game files for his dialogue: "Click on Fist Bernard Loudstone - S_WYR_WyrmRock_FFOfficeGuard_004 7f023df7-03e0-4d65-96ef-984be7392ba2"