NPCs composing that spawngroup :

a_helot_spectre (100%)

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

charasis_5, range=161 (217,-351,22)

hexbone_skeleton (100%)

charasis_10, range=183 (152,-404,24)

charasis_12, range=124 (12,-294,22)

elementalbone_skeleton (50%)
hexbone_skeleton (50%)

charasis_15, range=180 (101,-404,23)

charasis_22, range=121 (6,-276,23)

charasis_23, range=63 (79,-276,22)

charasis_24, range=78 (139,-299,21)

charasis_25, range=51 (85,-183,22)

charasis_26, range=30 (86,-217,23)

charasis_27, range=129 (12,-147,22)

a_pyre_golem (50%)
a_pyre_golem (50%)

charasis_29, range=149 (-12,-147,22)

charasis_30, range=162 (-1,-111,21)

a_pulsating_bile (50%)
hexbone_skeleton (50%)

charasis_31, range=83 (52,-170,23)

charasis_32, range=64 (52,-225,22)

charasis_33, range=145 (-28,-207,22)

charasis_112, range=116 (-1,-224,-194)

a_sepulcher_skeleton (100%)

charasis_173, range=74 (63,-278,-176)

charasis_174, range=89 (45,-279,-194)

greater_war_boned_skeleton (100%)

charasis_175, range=99 (25,-185,-194)

charasis_176, range=146 (-25,-185,-194)

charasis_177, range=84 (31,-225,-194)

a_sepulcher_skeleton (100%)

charasis_204, range=160 (14,-348,22)

hexbone_skeleton (100%)