NPCs composing that spawngroup :

Storm_Chaser (100%)

NPCs spawning around that spawngroup :
(Max range : 200)

thundercrest_monocle_251, range=103 (-1069,780,18)

thundercrest_monocle_259, range=190 (-1167,580,-37)

thundercrest_monocle_2_132, range=190 (-1167,580,-38)

thundercrest_monocle_4_134, range=153 (-1080,893,-12)

thundercrest_monocle_5_39, range=103 (-1069,780,18)

thundercrest_monocle_5_182, range=153 (-1080,893,-12)

thundercrest_monocle_5_191, range=190 (-1167,580,-38)

thundercrest_monocle_7_89, range=153 (-1080,893,-12)

thundercrest_monocle_7_91, range=190 (-1167,580,-38)

thundercrest_monocle_8_165, range=153 (-1080,893,-12)

thundercrest_monocle_8_174, range=190 (-1167,580,-38)

thundercrest_monocle_9_132, range=153 (-1080,893,-12)

thundercrest_287866, range=190 (-1167,580,-38)

thundercrest_287872, range=103 (-1069,780,18)

thundercrest_287880, range=153 (-1080,893,-12)