Loki (Earth-2006)

Loki Stark (née Laufeyson), or known by his adopted name Loki Odinson, was the biological son of King Laufey, the ruler of the Frost Giants in Jotunheim. Shortly after his birth, Loki was then abandoned and left to die. Found by the Asgardian King Odin, he was taken to Asgard and raised by Odin and his wife Frigga as an Asgardian prince, along with their true biological son Thor.

Throughout his childhood, Loki longed to be accepted and appreciated for his prodigal skills in magic and healing, but all he received was scorn from his peers and disapproval from his father and brother.

When he grew up, he became known as the "God of Mischief". When Thor was to be crowned King, Loki had sabotaged the coronation by letting Frost Giants attack Asgard, thus leading Thor to seek vengeance on Jotunheim, which resulted on Thor's banishment to Earth and Loki finding the truth about his heritage, leaving the young mage's mind in a catatonic state. Frigga gave Loki the throne when Odin had fallen into the Odinsleep, however when the Warriors Three and Sif attempted to return Thor home, Loki was forced to try to stop them. Regardless, Thor returned from his exile on Earth and ended Loki's reign.

In a moment of despair, Loki let go of Gungnir and fell into the Abyss. After a year of falling, Loki was found by the Mad Titan, Thanos, and his army of Chitauri minions. They tortured him for over a year before his mind was weak enough to be controlled by the Tesseract.

Once he came to Midgard, Loki managed to bond with the mystical Tesseract and used its power to open a portal above New York City and caused the Chitauri Invasion, thankfully all of Loki's schemes were ultimately defeated by a new group of superheroes called the Avengers and the control on his mind was broken. Thor returned him to Asgard as his prisoner, where Odin condemned him to spend the rest of his life in the Asgardian Dungeons as punishment for his crimes.

However, Loki managed to escape to Midgard, where he was taken in by the Avengers. He bonded with Tony, who was able to relate to what he went through, and Bruce Banner, who saved him from the mind control. Over time, he started falling in love with Tony and their friendship grew into a relationship.

After about a year of dating, Tony proposed and the two of them got married. Due to Loki's status as a Frost Giant, he got pregnant and gave birth to his and Tony's daughter, Anja Solveig Stark.