At the end of Thor, Loki knows the truth, and Frigga knows that Loki knows, but at no point does Thor find out the whole truth. In The Avengers, Thor says "He is adopted," so he must have learned the truth sometime between the events depicted onscreen.
True to his word, Thor tells Odin that his brother died honorably, not realizing that he was talking to Loki the whole time. Thor returns to Asgard in Ragnarok to find that his brother is actually very much alive.
This is a easy one. Thor was told Odin was not on Asgard so when he went there and Heimdal was not at the bifrost, he had a pretty good idea Loki was pretending to be Odin.
You see, Loki is actually Laufey's son, Laufey being kind of the Frost Giants. As a baby, Loki was abandoned, but Odin found him, adopted him, and raised and loved him as his own. It was only when Loki touched the Casket of Ancient Winters that he discovered he was not Asgardian.
The majority of storylines surrounding Loki in the Marvel Cinematic Universe had to do with his father issues. He was always insecure over how Odin didn't love him as much as he did Thor, with this eventually morphing into contempt for his father.
Odin found Loki, the abandoned offspring of Frost Giant leader Laufey, and took him in. After discovering this as an adult, Loki really isn't in a good headspace. Though Odin took Loki hoping that it would bring peace with the Frost Giants, he grew to love his son.
In 2010, Odin finally entered the Odinsleep after his adoptive son, Loki, berated him for not telling him of his true heritage as the son of Laufey. The Einherjar escorted his unconscious body to his bed, where his wife, Frigga, watched over him.
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.
"Loki Is About 16 Years Old In The MCU In Thor: The Dark World, Odin reminds Loki that Asgardians are not immortal and have lifespans as humans do, to which Loki responds: "Give or take 5,000 years." From this, it can be calculated that Asgardians live to about 5,100, with Loki being around 1050 years old in the MCU."
Modi Thorson was the son of Thor and the goddess of Death, Hela from the Ultimates timeline. The story of his conception and birth begins with the aftermath of an event called Ultimatum, which is also considered to be one of the worst event comics ever.
He has feats such as defeating Surtur (who can destroy a planet), conquering the 9 realms, and sealing away Hela. While there isn't much doubt that Thanos could beat Odin if he had all 6 stones, Odin could probably defeat Thanos if he only had one or two of them.
Hela is older than everyone on Asgard and older than Thor. Odin covered up his early days of conquest with his daughter, Hela, who's ambitions outgrew his own and became power-hungry. Another reason why is that Asgardians who probably knew Hela most likely died or wasn't around when she was off conquering with Odin.
Loki finally put his trust in his father's love. He finally roots himself in that love, claiming his sonship as his identity. The strength of Odin's love allowed Loki to make his own act of unshakeable love, remaining true to his brother even though it cost him his life.
In the wake of this discovery, the Angels went to war against Asgard, and Thor and Loki worked together to protect their home. It was a touching story that illustrated how, underneath all the scheming and mischief-making, Loki cares about his home and his brother.
Oddly enough, it was here when Odin chose to forgive him when he saw Loki before his death. At this point, Odin even praised Loki for using an effective enchantment on him. Odin didn't bring up any of the bad blood between them from Thor: The Dark World, nor did he have any anger toward Loki.
But Thor returned and exposed Loki's treachery, and then helped defeat Loki's attempt to conquer Earth in The Avengers. In Thor: The Dark World, Loki faked his death and tricked Odin while Thor was busy stopping Malekith (Christopher Eccleston) and the Dark Elves.
Following this final stanza a prose section details that after Loki left the hall, he disguised himself as a salmon and hid in the waterfall of Franangrsfors, where the Æsir caught him. The narrative continues that Loki was bound with the entrails of his son Nari, and his son Narfi changed into a wolf.
The actor returned in Ant-Man and the Wasp: Quantumania (in theaters now) not as his Loki character, He Who Remains, but finally as the villainous Kang the Conqueror... only for Scott Lang (Paul Rudd) and Hope van Dyne (Evangeline Lilly) to seemingly kill him off by the end of the movie.
In his development through the series, he becomes less of a supervillain and more of an antihero. By the end of the second season of the Loki TV series, the character has become a hero, making a heroic sacrifice to save the multiverse from destruction.
