NPCs composing that spawngroup :

a_sludge_lurker (100%)

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

snlair60731, range=95 (1249,240,-28)

snlair60744, range=36 (1272,303,-86)

snlair60749, range=64 (1341,370,-13)

snlair60752, range=44 (1350,318,-19)

snlair60754, range=60 (1350,356,-14)

snlair60756, range=99 (1393,268,-36)

snlair60770, range=89 (1342,234,-79)

snlair60771, range=82 (1245,259,-57)