NPCs composing that spawngroup :

#Jailor_Maufan (20%)

a_goblin_cave_lord (40%)

a_goblin_dust_hoodlum (40%)

NPCs spawning around that spawngroup :
(Max range : 100)

droga_37, range=81 (49,1001,-221)

a_goblin_bone_knight (50%)
a_goblin_whip_cracker (50%)

droga_158, range=51 (-56,1080,-253)

a_goblin_prison_warden (100%)

droga_195, range=15 (3,1062,-253)

a_goblin_bone_depredator (50%)
a_goblin_bone_depredator (50%)

droga_224, range=55 (-47,1098,-253)

a_noxious_drogan_spider (50%)
a_noxious_drogan_spider (50%)

droga_225, range=68 (-77,1073,-253)

a_goblin_bone_depredator (50%)
a_goblin_dust_hoodlum (50%)

droga_226, range=25 (-2,1080,-253)

a_goblin_earth_seer (50%)
a_goblin_ice_master (50%)

a_goblin_cavehunter_189442, range=75 (-81,1084,-251)

a_goblin_rock_sneak (100%)

droga_a_goblin_taskmaster0_takp_import_v0, range=3 (-8,1054,-252)