NPCs composing that spawngroup :

Captain_of_the_Guard (4%)

plaguebone_skeleton (48%)

plaguebone_skeleton (48%)

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

citymist_1, range=78 (-117,-416,76)

#A_Terror_Wraith (10%)
greater_war_boned_skeleton (90%)

citymist_101, range=80 (-120,-459,75)

citymist_141, range=98 (-139,-422,5)

plaguebone_skeleton (25%)

citymist_152, range=72 (-100,-483,4)

citymist_154, range=67 (0,-387,10)

a_haze_golem (50%)

citymist_158, range=72 (-1,-500,21)

citymist_165, range=41 (-54,-400,10)

a_haze_golem (50%)
a_lost_one (50%)

citymist_166, range=93 (-15,-530,5)

#A_Mighty_Golem (10%)
a_vapor_golem (90%)

citymist_222977_takp_import_v0, range=74 (-115,-454,75)

citymist_223158_takp_import_v0, range=75 (-115,-460,75)

gyrating_goo (50%)
gyrating_goo (50%)

citymist_222958_takp_import_v0, range=37 (-35,-403,11)

citymist_222956_takp_import_v0, range=93 (-14,-529,3)

citymist_222955_takp_import_v0, range=97 (-138,-421,5)