NPCs composing that spawngroup :

a_shelled_defender (100%)

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

morellcastle101226, range=63 (584,-6168,86)

morellcastle101228, range=64 (614,-6171,86)

morellcastle101229, range=85 (648,-6169,86)

morellcastle101233, range=73 (650,-6190,83)

morellcastle101234, range=12 (577,-6229,86)

morellcastle101237, range=50 (640,-6231,91)

morellcastle101243, range=81 (534,-6173,95)