NPCs composing that spawngroup :

a_shrouded_willsapper (33%)

a_shrouded_willsapper (34%)

a_shrouded_willsapper (33%)

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

griegsend1304216, range=49 (-78,1679,-64)

a_shrouded_willsapper (50%)
a_shrouded_willsapper (50%)

griegsend_282480, range=44 (-11,1679,-64)

Screeching (100%)

griegsend_A_Dark_Vision11, range=88 (45,1626,-64)

griegsend_A_Dark_Sending_0, range=94 (-131,1616,-64)