Since he is ultimately an unpredictable force, others often meet the Phantom Stranger's appearance with distrust. Nonetheless, most heroes will follow him, seeing not only his immense power, but also knowing that the Stranger is, in the end, a force for good. He has generally shown to side with humanity first in many supernatural-based problems, such as when he aided Superman in a confrontation with the magician Arion, who attempted to force Superman to retire in the belief that Superman and other alien heroes would hold back the 'darkness' that would make civilization—Arion describing human history as existing in a cycle that would allow humanity to develop to a certain point before they collapsed and had to start again—for so long that it would destroy humanity when it came; although the Stranger acknowledged that the future Arion had foreseen, where Earth was completely destroyed by the mysterious and powerful Khyber due to Superman delaying him for so long that he only struck at his peak, was possible, he also told Superman to keep fighting to find another way as the cost in souls and experience if Arion succeeded would be too great. A notable exception to the heroes who will work with the Stranger is Madame Xanadu, who has refused to join the Stranger on a few occasions, although she is a member of his Sentinels of Magic. Eventually, it was revealed that Madame Xanadu's hatred for the Phantom Stranger stems from his involvement in the events costing young Nimue her powers and heritage, and turning the young fey into the immortal yet powerless clairvoyant.