NPCs composing that spawngroup :

Knight_of_Decay (100%)

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

codecay2000040, range=89 (-103,68,-95)

Corrupted_Pusling (50%)
Foul_Pusling (50%)

codecay2000043, range=77 (-79,45,-95)

Corrupted_Pusling (50%)
Foul_Pusling (50%)

codecay2000105, range=68 (-55,0,-287)

Summoner_of_Bertoxxulous (100%)

codecay_275202, range=40 (-120,20,-276)