NPCs composing that spawngroup :

a_helot_spectre (100%)

NPCs spawning around that spawngroup :
(Max range : 200)

charasis_7, range=123 (117,-458,40)

an_undertaker_skeleton (50%)
a_hamal_skeleton (50%)

charasis_8, range=161 (152,-440,25)

charasis_9, range=169 (146,-422,24)

charasis_10, range=186 (152,-404,24)

charasis_11, range=199 (-99,-388,5)

a_helot_spectre (100%)

charasis_14, range=126 (101,-440,22)

charasis_15, range=157 (101,-404,23)

charasis_17, range=23 (26,-520,23)

a_helot_spectre (50%)
hexbone_skeleton (50%)

charasis_19, range=121 (-43,-444,22)

charasis_20, range=138 (28,-405,22)

charasis_21, range=140 (7,-404,22)

charasis_88, range=122 (135,-600,22)

charasis_89, range=125 (152,-533,22)

charasis_90, range=109 (136,-532,22)

charasis_91, range=137 (152,-600,22)

charasis_170, range=174 (142,-674,22)

a_helot_skeleton (100%)

charasis_185, range=165 (47,-707,22)

a_mortiferous_golem (50%)
a_mortiferous_golem (50%)

charasis_190, range=174 (115,-694,4)

charasis_192, range=68 (65,-600,22)

charasis_193, range=77 (80,-600,22)

charasis_194, range=54 (80,-532,22)

charasis_195, range=37 (63,-533,22)

charasis_196, range=101 (-45,-471,22)

charasis_197, range=195 (-83,-381,4)

charasis_203, range=131 (-28,-424,21)

a_pulsating_bile (100%)

charasis_204, range=195 (14,-348,22)

hexbone_skeleton (100%)