NPCs composing that spawngroup :

an_ice_goblin (50%)

a_goblin_evoker (50%)

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

permafrost_10, range=62 (125,-318,3)

permafrost_11, range=72 (135,-329,3)

permafrost_16, range=85 (121,-341,3)

permafrost_29, range=94 (49,-288,3)

an_ice_goblin (50%)
a_goblin_prelate (50%)

permafrost_30, range=90 (48,-256,3)

an_ice_goblin (50%)
a_goblin_diviner (50%)

permafrost_31, range=93 (45,-270,3)

permafrost_33, range=60 (168,-309,3)

an_ice_goblin (100%)

permafrost_81, range=73 (133,-330,3)

a_goblin_evoker (50%)
a_goblin_priest (50%)

permafrost_82, range=75 (184,-197,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_103, range=60 (120,-315,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_122, range=90 (202,-321,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_124, range=89 (124,-345,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_126, range=90 (217,-213,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_127, range=71 (205,-231,3)

a_goblin_priest (50%)
a_goblin_priest (50%)

permafrost_128, range=36 (160,-228,17)

an_ice_goblin (50%)
a_goblin_prelate (50%)

permafrost_129, range=51 (150,-307,3)

an_ice_goblin (100%)