NPCs composing that spawngroup :

A_chill (50%)

six (50%)

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

velketor_1, range=77 (256,8,-15)

velketor_53, range=79 (107,47,8)

a_crystal_gargoyle (100%)

velketor_59, range=81 (129,-50,-30)

velketor_61, range=55 (197,66,-112)

a_velium_stalker (50%)
The_Brood_Master (50%)

velketor_62, range=41 (140,0,-92)

velketor_63, range=60 (183,74,-112)

velketor_64, range=71 (140,-46,-92)

a_velium_broodling (50%)
a_velium_hunter (50%)

velketor_65, range=87 (105,60,-73)

velketor_86, range=64 (170,-50,-29)

velketor_90, range=95 (85,32,6)

a_crystal_guardian (50%)
Rijoely (50%)

velketor_92, range=98 (172,112,6)

velketor_93, range=41 (140,-1,10)

velketor_94, range=82 (172,96,-58)

Crystal_Guardian (100%)

velketor_96, range=73 (182,-59,-109)

a_large_crystal_shard (50%)
a_large_crystal_shard (50%)

two_189760, range=61 (198,-44,-109)

The_walls (50%)
two (50%)

velketor_99114, range=64 (225,59,-187)