Morwen is an ancient force of destruction who was banished ages ago from the mortal world to the astral planes by the mortal mystic the Ancient One. After Spider-Man
interfered with in a mystical battle between the Ancient One's successor, Doctor Strange and Dormammu
, Morwen was accidentally liberated and took possession of stock trader, Tess Black. Unaware that her host was actually a child of the Asgardian
, Morwen warned Spider-Man he could accept her gratitude or die, but Spider-Man worked with Loki to free his daughter without driving her mad in the process. While Spider-Man distracted Morwen, Loki telepathically encouraged Tess to fight back. Morwen was driven back into exile, Tess' memories were erased, and Loki departed indebted to Spider-Man.