NPCs composing that spawngroup :

greater_war_boned_skeleton (50%)

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

citymist_41, range=42 (195,420,-7)

citymist_42, range=49 (257,400,-6)

citymist_89, range=34 (259,422,5)

citymist_222981_takp_import_v0, range=85 (278,370,16)

citymist_222963_takp_import_v0, range=71 (193,382,-7)

citymist_222973_takp_import_v0, range=89 (218,353,-6)

a_fog_golem (50%)
a_vapor_golem (50%)

citymist_222968_takp_import_v0, range=44 (253,403,-7)