According to Classic Loki, he conjured a replica of himself so lifelike that Thanos bought it. Then, he hid by shape-shifting into inanimate debris. After faking his death, Grant's Classic Loki drifted in space and wound up on a remote planet. He stayed there in isolation and simply lived his life.
At the end of the film, Loki was seen careening through space to his apparent death, only to resurface during the end credits scene. As we found out in 2012's The Avengers, Loki had survived his fall, but he was under the influence of Thanos. That wasn't the only time Loki faked his death.
Apparently, Loki's powers in the MCU include the ability to project an exact doppelgänger of himself, which he describes as "an exact facsimile of one's own body in its present circumstance... a true holographic mirror of its molecular structure." This is likely how Loki faked his death in Thor: The Dark World — by ...
At the end of Thor, he apparently took his own life — but Loki survived death by plunging into one of the many portals he knew could be found in Yggdrasil.
Thor knew that Loki was alive and on Earth not because of Heimdall… because of Frigga. In the comics version of The Movie Thor (2011), it is noted that Frigga communicated with Loki and warned Odin & Thor that the God of Mischief is alive and well. Hope this helps.
And then it hit me: The last words Thor ever spoke to Loki were, "You really are the worst brother." OK, Loki was absolutely the worst brother and he deserves that, but we've seen years' worth of Thor deciding to kill Loki, only to reluctantly realize he loves his brother too much to kill him.
In Thor: The Dark World, the God of Mischief joined Thor in battle against the Dark Elves, apparently redeeming himself, but died when he was stabbed in the chest. Thor grieved the loss of his brother, but viewers soon learned he had not really died at all.
Loki, despite his past actions, is given a chance to be a "good guy" and redeem himself, unlike other villains. Loki's popularity and sympathetic persona contribute to his extensive redemption, making him one of the MCU's beloved characters.
It's possible that Loki survived plunging into Yggdrasil because he sensed the location of a portal, and guided his fall into it. Note that even Odin wouldn't suspect this, simply because he doesn't seem to know about these portals.
Citing the Marvel Visual Dictionary, this theory explains that Odin used magic to make Loki seem Asgardian. However, Odin must have used stronger magic than a simple illusion. Otherwise, Loki would have turned blue in Loki when he entered the Time Variance Authority (TVA) Office, where magic and powers did not work.
The appearance of Odin was used by Loki to rule the Asgardians for some time after Loki's faked death on Svartalfheim. While ruling Asgard as Odin, Loki cast a spell on his father to make Odin forget himself and exiled him to Earth, leaving him dazed at Shady Acres Care Home: a retirement home in New York City.
After a couple of years, Classic Loki attempts to leave his isolation only for the TVA to be alerted and for him to be taken in as a variant. This clearly shows us that in the Sacred Timeline Loki survived Infinity War and has been living on this unknown planet for the past couple of years.
Loki is married to Sigyn and they have two sons, Narfi or Nari and Váli. By the jötunn Angrboða, Loki is the father of Hel, the wolf Fenrir, and the world serpent Jörmungandr. In the form of a mare, Loki was impregnated by the stallion Svaðilfari and gave birth to the eight-legged horse Sleipnir.
Originally Answered: Why didn't Loki use the Tesseract against Thanos on the Asgardian ship? At the time, Thanos only had one Infinity Stone, and the Tesseract should have been able to hold its own against him, especially with the help of Thor and the other Asgardians. Simply because he doesn't know how.
Answer and Explanation: According to Norse mythology, Thor dies in an epic battle with a monstrous serpent named Jörmungandr, also known as the Midgard (middle earth) Serpent. Both opponents meet their death in this battle, which is a part of the ultimate destruction of the current world, known as Ragnarök.
This stemmed from his childhood and the belief that Odin didn't love him. While Odin's hiding of Loki's true parentage and Thor's demeaning behavior may have influenced Loki, ultimately he is to blame for his villainous actions due to his own issues with self-acceptance and misinterpretation of his upbringing.
Loki was regarded by the ancient Norse people as the god of mischief, trickery, and deception. He was also seen as the father of several gods and Jotunns, including Sleipnir, Hel, Jormungandr, and Fenrir.
If Loki had left the Tessaract, the Tessaract would break, but the space stone would drift for anyone to take it among the debris. The stones are linked you have one, you can easyer find the other once. Thanos and probably also Maw could sence Loki had it.
But by sacrificing himself to help Loki and Lady Loki, Classic Loki proves himself wrong. He's not selfish like the other Loki variants. He does have a glorious purpose, and it's giving up his life to help others. He laughs because of the absurdity of it all.
However, Loki loved his mother, Frigga, who showed more affection to him. Sadly, both Odin and Frigga died in the original timeline. Loki felt angry and heartbroken after learning Algrim killed his mother. Also, the original Loki briefly reconciled with Odin before he died of old age.
During the events of Ragnarok, which led to the ultimate destruction of the cosmos, Loki, along with all the gods and goddesses, met his final end. His demise came in a battle with the Aesir god Heimdall, the guardian of Asgard, in which they fought each other to the death.
He whispered the words of the enchantment that was thereafter inscribed on the hammer: “Whosoever holds this hammer, if he be worthy, shall possess the power of Thor.” His intent was to give Thor a way to get his suppressed powers back once he learned his lesson.
That's why he's making Thor king. The stress of Thor's Jotunheim debacle followed up by Loki revealing he knew his true parentage was too much. It appears Odin suffered some kind of stroke or heart attack which forced him into the Odinsleep. At the beginning of Thor, Odin was about to abdicate and make Thor king.
