NPCs composing that spawngroup :

a_velium_broodling (50%)

a_velium_stalker (50%)

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

velketor_a_crystalline_gargoyle49, range=15 (-49,-20,134)

velketor_A_stalagtite19, range=99 (-138,-1,-72)

A_stalagtite (50%)
one (50%)

velketor_A_tentacle15, range=58 (-3,38,-71)

A_tentacle (50%)
five (50%)

velketor_a_shimmering_orb10, range=59 (-98,0,5)

a_shimmering_orb (100%)

velketor_four16, range=65 (26,-6,-72)

four (50%)
Something_seems (50%)

gargs and golems, range=76 (-16,-81,-30)

golems only, range=46 (-84,5,6)

velketor_223643, range=79 (-35,71,-73)

a_velium_stalker (85%)
The_Brood_Master (15%)

velketor_223648, range=46 (-77,-35,-69)

an_Icepaw_champion (50%)
an_Icepaw_kobold_priest (50%)

velketor_223665, range=45 (-25,35,134)

velketor_223675, range=60 (21,0,99)

velketor_223678, range=45 (-84,-5,6)

velketor_223682, range=68 (-28,60,-73)

a_velium_broodling (50%)
a_velium_hunter (50%)