NPCs composing that spawngroup :

imp_guardian (100%)

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

soldungc2780001, range=109 (832,-446,15)

the_Firewatcher (100%)

soldungc2780010, range=125 (705,-543,24)

#Culthor_the_Gatekeeper (100%)

soldungc2780011, range=131 (680,-542,16)

a_fiendish_guardian (100%)

soldungc2780012, range=101 (703,-518,16)

a_fiendish_guardian (100%)

soldungc2780013, range=135 (728,-554,18)

a_fiendish_guardian (100%)

soldungc2780045, range=118 (796,-515,14)

a_lava_beetle (100%)

soldungc2780046, range=151 (832,-527,14)

a_cinder_scavenger (100%)

soldungc2780047, range=187 (910,-457,0)

a_smoldering_abomination (100%)

soldungc2780049, range=71 (797,-422,14)

a_lava_beetle (100%)

soldungc2780050, range=100 (763,-326,16)

a_cinder_scavenger (100%)

soldungc2780051, range=80 (778,-358,14)

a_cinder_scavenger (100%)

soldungc2780052, range=118 (824,-353,15)

a_cinder_scavenger (100%)

soldungc2780053, range=152 (829,-307,16)

a_cinder_scavenger (100%)

soldungc2780054, range=161 (861,-330,8)

a_lava_beetle (100%)

soldungc2780196, range=187 (543,-380,16)

imp_guardian (50%)
imp_vanquisher (50%)

soldungc2780197, range=199 (542,-342,12)

#Pulsating_Pool_of_Magma (50%)
a_burning_mire (50%)

soldungc2780198, range=143 (588,-381,14)

a_blistering_horror (50%)
a_smoldering_abomination (50%)

soldungc2780199, range=75 (708,-346,16)

imp_defender (50%)
imp_vanquisher (50%)

soldungc2780201, range=23 (703,-422,10)

imp_vanquisher (100%)

soldungc2780203, range=146 (611,-329,11)

a_conflagarant_terror (100%)

soldungc2780204, range=97 (813,-461,11)

a_smoldering_abomination (100%)

soldungc2780221, range=168 (598,-310,2)

soldungca_fiendish_guardian003102783696, range=105 (724,-525,16)

a_fiendish_guardian (100%)

soldungca_fiendish_guardian004102818550, range=147 (687,-562,16)

a_fiendish_guardian (100%)

soldungca_fiendish_guardian001102887578, range=149 (711,-568,16)

a_fiendish_guardian (100%)

soldungc#culthor_spells000419750662, range=159 (660,-565,-12)

#culthor_spells (100%)