NPCs composing that spawngroup : sonic_bat (50%) sonic_bat (50%)

NPCs spawning around that spawngroup : (Max range : 100) soldungb_63, range=87 (-1002,-346,-83) lava_duct_crawler (50%) stone_spider (50%) soldungb_83, range=82 (-1071,-488,-7) sonic_bat (33%) sonic_bat (33%) sonic_bat (34%)