NPCs composing that spawngroup :

a_deranged_madman (16%)

a_savage_mutant (16%)

greater_plaguebone (16%)

greater_war_boned_skeleton (16%)

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

citymist_56, range=72 (262,-334,-14)

greater_war_boned_skeleton (33%)
greater_war_boned_skeleton (34%)

citymist_59, range=88 (262,-354,39)

citymist_62, range=68 (227,-348,-14)

a_shadow (34%)
plaguebone_skeleton (33%)

citymist_86, range=96 (121,-312,256)

citymist_87, range=97 (136,-342,275)

citymist_92, range=50 (162,-284,76)

citymist_94, range=59 (249,-327,77)

citymist_117, range=67 (214,-349,64)

citymist_125, range=99 (259,-369,255)

gyrating_goo (50%)
gyrating_goo (50%)

citymist_127, range=47 (219,-328,274)

citymist_128, range=49 (189,-325,274)

citymist_129, range=12 (201,-286,275)

greater_war_boned_skeleton (25%)
greater_war_boned_skeleton (25%)

citymist_132, range=38 (189,-250,1)

citymist_170, range=94 (246,-193,2)

citymist_223157_takp_import_v0, range=83 (147,-334,273)

citymist_222986_takp_import_v0, range=46 (219,-327,273)

citymist_a_mist_golem7_takp_import_v0, range=26 (211,-307,274)

a_mist_golem (100%)

citymist_222988_takp_import_v0, range=48 (189,-324,274)

a_fog_golem (50%)
greater_war_boned_skeleton (50%)

citymist_222982_takp_import_v0, range=66 (258,-329,77)

a_mist_golem (50%)
a_phantom (25%)
a_phantom (25%)

citymist_222970_takp_import_v0, range=58 (249,-326,75)

citymist_222977_takp_import_v0, range=27 (185,-286,77)

citymist_a_phantom39_takp_import_v0, range=46 (167,-291,77)

a_phantom (50%)
a_phantom (50%)
a_phantom (50%)
a_phantom (50%)

citymist_223158_takp_import_v0, range=94 (279,-348,75)

gyrating_goo (50%)
gyrating_goo (50%)

citymist_222961_takp_import_v0, range=74 (243,-349,-15)

citymist_222966_takp_import_v0, range=89 (242,-365,41)

citymist_222972_takp_import_v0, range=75 (182,-350,63)

citymist_222969_takp_import_v0, range=54 (198,-334,-11)