NPCs composing that spawngroup :

An_Enthralled_Razorfiend (100%)

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

thedeep1312284, range=60 (-644,-309,-92)

a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)
a_shrieker (50%)

thedeep1312283, range=97 (-751,-420,-94)

a_shrieker (50%)
a_shrieker (50%)

thedeep1312263, range=63 (-738,-387,-94)

An_Enthralled_Underbulk (100%)

thedeep1312246, range=96 (-732,-428,-91)

a_shrieker (34%)
a_shrieker (33%)
a_shrieker (33%)

thedeep1312181, range=65 (-632,-324,-93)

thedeep1312180, range=71 (-642,-292,-94)

a_shrieker (50%)
a_shrieker (50%)

thedeep1312017, range=81 (-627,-296,-94)