Vali Halfling born of a mortal mother and the trickster god, Loki. This brought him to Asgard and took him under his wing, there Vali befriended Siingard. At one point, Vali found himself trapped in Hel, the underworld of Asgard, but his half-sister Hela released him as a token of family affection. When Vali angered the Asgardians by stealing their many secrets, Odin banished him to Midgard with the curse of eternal adolescence. On Earth, despite his youthful appearance, Vali had many children, but few of them inherited divine abilities.
Vali traded the pick of his future offspring to the Troyjan race in exchange for knowledge of immortality. Agamemnon neither claims nor denies being the Agamemnon who was king of Argos and commander-in-chief of the Greek army against Troy in ancient times. Since that time, he claims to have assumed dozens of identities and have fathered hundreds of children. At a relatively recent point in time, Agamemnon was instrumental is establishing the Pantheon, an interventionist think-tank dedicated to improving the human condition by ending war, famine, and disease. He has often recruited several of his own family, who exhibit superhuman abilities such as near-immortality due to their hybrid nature. No one recently has seen Agamemnon personally, as Agamemnon prefers to use a holographic projection to communicate with others while residing within the Pantheon's headquarters. (It is not yet revealed whether Agamemnon's holographic projection is technological, magical, or psychic by nature, and the true limits to the range and size of projection is unknown.)
Ultimately, he betrayed the Pantheon, and when his children became aware of the betrayal he attempted to slay them all. While trying to escape, his rocket was shot down, and he seems to have died.
Prince of Power
Vali was resurrected along with the other Asgardians came to life when Thor reappeared after the last Ragnarok. Acting now without disguise holographic since many of his descendants now know his true appearance, Vali took control of the Pantheon and convinced several of them, including Atalanta, to return to his side against the promise to save humanity while becoming real deities. The Pantheon also became a subcontractor of the Olympus Group of Zeus, thus increasing the involvement of Olympians in human affairs.
As the siege of Asgard organized by corrupt industrialist Norman Osborn occupied the Asgardians, agents Vali flew various relics he needed to develop a formula for omniscience, the Golden Apples of Idunn, which enabled Asgardians keep their youth and Vali prepared plans to continue to acquire other ingredients. Vali manipulated the young and new director of the Olympus Group, the genius Amadeus Cho, so that it completes the formula for him Cho discovered that Vali had stolen apples, but Vali Cho managed to pass for the manager. Occupied with Cho, Vali flew Olympian ambrosia hands of Hebe, cup bearer of the Olympians, and destroyed the Promethean Flame maintained that the power of the Olympians, causing rapid aging and impotence of the latter.
Vali continued to help Cho in his projects, announcing his plan to Grand Areopagus, causing panic in other pantheons. Vali took control of the New York headquarters of the Olympus Group, unaware that Delphyne Gorgon, an enemy of the Olympians, had managed to escape during the attack. While sovereign pantheons focused on Cho, Vali took the Book of Thoth, kept in the sarcophagus of Nefer-Ka-Ptah in the necropolis of Saqqara. Absorbing magic spells book, Vali entered the field of Hindu gods, Krauncha and forced demons, the Asura, to help find the Moon Cup, held by the god Dhanvantari doctor. While Vali was able to stand up to Cho and Thor, he was taken by surprise by Delphyne, who had taken control of the arc energy Atalante after defeating it. This distraction allowed Cho to complete the formula developed by Vali and get himself omniscience, negating all damage caused by Vali and sending it to Duat, the realm of the dead in the Egyptian pantheon, where he found himself in front of the goddess Sekhmet destruction.
When the mutant Wolfsbane was carrying the child of Hrimhari the Wolf Prince. Vali was one of the many mythical beasts hunting the baby.  The fight went on until the mystical energies generated by Hel banished all the creatures.
Vali is a human, asgardian hybrid, providing various advantages over other humans.
Superhuman Strength: Due to his Asgardian heritage Vali has superhuman strength. Allowing him the ability to liftup to 30 tons.
Superhuman Stamina: His musculature generates considerably less fatigue toxins during physical activity than the musculature of a human. He can physically exert himself for about 24 hours before the build up of fatigue toxins in his blood begins to impair him.
Dense Tissue: Like Due to his Asgardian heritage Vali's bodily tissues have about 3 times the density of the bodily tissues of a human.
Superhuman Durability: Vali's body is much harder and more resistant to damage than the body of a human being. Vali can withstand great impact forces, falls from great heights, powerful energy blasts, and exposure to extremes in both temperature and pressures without sustaining injury.
Extended Longevity: Vali does not age and was stopped in its growth while still having a physical teenager. He is also immune to all known Earthly diseases and infections.
Regenerative Healing Factor: If Vali is injured, his Asgardian metabolism enables him to repair damages tissue much faster and much more extensively than a human being. However, he can't regenerate severed limbs or missing organs, at least not without the aid of powerful magical assistance.
Master Tactician and Strategist: Vali is extremely skilled in analyzing and forecasting the future development of social structures. He is able to formulate battle strategies and his brilliant tactical sense allows him to alter any strategy to fit the changing need of the situation.
Intellect: Vali has an extraordinary intelligence and an excellent strategist, able to anticipate future developments of social structures.
Sorcery: Vali is experienced in the use of magic but really showed magical abilities after internalized the enchantments of the Book of Thoth, including the control of minor demons, the projection of different forms of energy and levitation. He can teleport around the world or to any pantheon, by magical or technological means.
Teenage Body: Vali suffers and difficulties of adolescents mortals, like sudden hormonal changes or acne .
According to ancient legends, Vali, son of Loki, was transformed into a wolf by other gods and forced to kill Narvi another son of Loki. The bowels of Narvi were then used to bind Loki until the arrival of Ragnarok.
Agamemnon told The Hulk that one of the times he went out into the world was during the Second World War where he had many adventures. This coupled with his youth and appearance led many readers to believe he was Bucky Barnes, Captain America's deceased teen partner from the 1940's.