NPCs composing that spawngroup :

a_crystaline_sentinel (45%)

a_crystalline_gargoyle (45%)

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

velketor_1, range=94 (237,-116,-188)

velketor_27, range=45 (134,-78,-85)

an_Icepaw_kobold (33%)
an_Icepaw_kobold_priest (33%)

velketor_34, range=77 (121,-110,-85)

velketor_59, range=41 (129,-50,-30)

velketor_62, range=58 (140,0,-92)

velketor_64, range=30 (140,-46,-92)

velketor_65, range=64 (194,-110,-112)

velketor_85, range=82 (88,-50,-29)

a_crystaline_sentinel (45%)
a_crystal_gargoyle (45%)

velketor_92, range=39 (131,-43,8)

velketor_93, range=87 (172,-137,6)

velketor_96, range=15 (182,-59,-109)

a_large_crystal_shard (50%)
a_large_crystal_shard (50%)

two_189760, range=28 (198,-44,-109)

The_walls (50%)
two (50%)

six_189764, range=64 (179,14,-109)

A_chill (50%)
six (50%)