"I know what you are seeking.
"You are wondering if Loki Laugheyson ever has a happy ending.
"You are wondering if he is eternally damned and hated, or if there is some slight possibility that even one such as he may find happiness and love. Is he—in all of the possibilities of all the universes—always ends all of his days chained to a rock with a firey serpent dripping acid on his face or if there exists some spark in his being that is good enough to stave off that horrible fate.
"Of course, there is Sigyn—his good and faithful woman. Sigyn the Patient. Sigyn the Faithful. Sigyn who holds a bowl over his face to catch the poison and save Loki from its pain. Yet even Sigyn must turn to pour the bowl out and Loki is again beset with acid dripping on his face and writhes in torment causing the earth to shake.
"How do you explain her?
"In your understanding of Loki, and all the mischief and plots and evil he has done, how does he warrant another staying by his side, sharing his punishment unerringly and eternally? How does one who has plotted and schemed and black-heartedly killed earn such loyalty and devotion? How do you explain her—for she shares his torment willingly, rather than let him face his fate alone. And she is allowed to pour the poison out—setting him in torment—rather than let it touch her hands.
"In all of the realms of possibilities, all the byways of choice, is there rhyme or reason for Sigyn? Is she a misplaced demon, who must impatiently wait to be freed or to fulfill some punishment of her own? Is she punished by Odin Allfather to await Ragnarock as an unwilling companion? Is she an unlucky and ill-witted fool to believe the self-proclaimed Lord of Lies? Is she perhaps cursed by Loki's own magic to serve him?
"But come now. You have not asked about Sigyn. You have asked about Loki. You have asked if he achieves a happy ending where he is freed from the devils driving him to ruin and evil. Is it his karma to be the darkness to Thor Odinson's light—and to thus, ultimately be ruined by his own evil? Or is there some way—some choice unmade or path chosen—that he too, is redeemed?
"I—Uatu, the Watcher of the Migardian Realm and the planet Earth—have seen the roads of possibilities. I have seen the endings and beginnings of thousands and infinities beyond your ken. I have seen that in your universe, ultimately Loki does fall to darkness and is cursed to ruin because of his choices.
"Yet there does exist a realm of possibilities where Loki is not counted completely evil and judged and punished. There does exist a realm where his story does not end in racking torture. Of the many realms where damsels and youths fall for his false charm and empty promises, there is a realm where the charm and promises have been real.
"Know this, though. This realm that I show you is not your own. I do not show you anything that can yet exist in this realm that you know and love as every choice, every step and every word fall into a steady track and build on the last. Even if the choices made here were undone in an attempt to follow this path, there would be no possibility that this would be Loki's future. His way is set by his hand and his choices and his destiny is his own. I will not alter this by showing you the ultimate outcomes that no mortal or immortal should know before their time.
"As well, know this. The smallest choice can change the destiny of nations and the tinyest change can turn the tide of destiny."