NPCs composing that spawngroup :

An_Enthralled_Underbulk (20%)

An_Enthralled_Underbulk (80%)

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

thedeep1312282, range=91 (-727,158,-72)

a_shrieker (100%)

thedeep1312251, range=26 (-650,172,-93)

an_enthralled_outcast (50%)
An_Enthralled_Razorfiend (50%)

thedeep1312250, range=89 (-556,108,-89)

an_enthralled_outcast (100%)

thedeep1312220, range=67 (-569,150,-88)

An_Enthralled_Razorfiend (50%)
An_Enthralled_Razorfiend (50%)

thedeep1312170, range=60 (-578,131,-90)

an_enthralled_outcast (50%)
an_enthralled_outcast (50%)

thedeep1312132, range=49 (-587,147,-90)

thedeep1312017, range=78 (-558,139,-90)