NPCs composing that spawngroup :

an_ice_goblin (50%)

a_goblin_evoker (50%)

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

permafrost_2, range=59 (432,-20,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_37, range=93 (283,15,-25)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_38, range=83 (458,-13,3)

a_goblin_evoker (50%)
a_goblin_priest (50%)

permafrost_39, range=47 (361,41,-27)

permafrost_40, range=89 (369,85,-41)

a_dire_pup (50%)
a_dire_wolf (50%)

permafrost_71, range=73 (418,56,-41)

a_young_dire_wolf (50%)
a_young_dire_wolf (50%)

permafrost_75, range=54 (378,50,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_108, range=16 (385,-17,3)

an_ice_goblin (50%)
a_goblin_evoker (50%)

permafrost_109, range=26 (401,-7,3)

an_ice_goblin (50%)
a_goblin_evoker (50%)

permafrost_111, range=82 (383,78,3)

an_ice_goblin (50%)
a_goblin_priest (50%)

permafrost_112, range=88 (443,52,3)

a_goblin_evoker (50%)
a_goblin_mendicant (50%)