NPCs composing that spawngroup :

a_pyre_golem (100%)

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

charasis_2, range=72 (-28,-207,22)

a_mortiferous_golem (100%)

charasis_25, range=81 (85,-183,22)

charasis_30, range=38 (-1,-111,21)

hexbone_skeleton (50%)
pulsating_bile (50%)

charasis_31, range=46 (52,-170,23)

an_undertaker_skeleton (50%)
a_hamal_skeleton (50%)

charasis_32, range=87 (52,-225,22)

charasis_39, range=77 (-1,-224,-194)

charasis_80, range=40 (25,-185,-194)

charasis_176, range=53 (-25,-185,-194)