Loki is the son of Fárbauti (a jötunn) and Laufey (mentioned as a goddess), and the brother of Helblindi and Býleistr. Loki is married to Sigyn and they have two sons, Narfi or Nari and Váli.
Odin and Loki are blood brothers, but the origin of this seems to be unclear in Norse Mythology. One version says that Odin killed Loki's giant father and adopted him. Another version states that Loki and Odin were both around at the beginning of time and we're good friends.
While the Loki of the Marvel comics and films does derive his cunning character from the Loki of Norse myth, the biggest difference is that in the Marvel universe, Loki is depicted as the adopted brother and son of Thor and Odin.
The God of War Loki's lineage is quite different, with Laufey as his birth mother and the Greek demigod, Kratos, as his birth father. GOW's Loki is known as Atreus throughout the duration of the game, and his true identity is only discovered at its conclusion.
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.
Lunari is Loki's twin siser. Brought up in Jotunheim under her father Laufey, as a warrior, but a princess as well, she had to take the thrown after her father's death. Now she needs to find her brother and what she meets is far from what she expected.
Ages ago, Odin fought and defeated Laufey and the Frost Giants of Jotunheim in a great war. Abandoned and left for dead as a baby due to his diminutive size, Odin took Loki, son of Laufey, to Asgard to raise him as his son and a prince in order to one day unite the Frost Giants and the Asgards in peace.
Thor and Loki are epically powerful gods from the Norse-inspired realm of Asgard, both powered by humanity's belief in them, but it is often shown that the God of Thunder Thor is much more "powerful" than his sibling Loki.
Although they are commonly represented as brothers in modern literature and representations, traditionally they were not considered brothers. Loki became blood brothers with Odin, Thor's father, after they participated in a blood-sharing ritual. Loki is thus Thor's adopted uncle, not his adopted brother.
Tyr; god of war based on the deity Týr, son of Odin is Thor's older brother. Tyr a veteran who lost his left hand while binding the Fenris wolf was the defender of Asgard before the time of Thor. Tyr becomes resentful when Thor replaces him.
Loki shapeshifted and turned himself into an alluring female horse to draw Svaðilfari away from helping the master builder complete Asgard's fortifications. When they were together, Loki and Svaðilfari mated. Loki subsequently became pregnant and gave birth to Sleipnir.
Hel is the Norse goddess of the underworld. She is the daughter of the trickster god Loki and the giantess Angrboda. Loki has three children with her: a giant serpent named Jormungand, a giant wolf named Fenrir, and Hel herself, who is half-dead and half-alive.
Raised alongside her older brothers, Thor and Loki, Freya grows close to both of them. Thor trains Freya how to fight; however as she improves, Thor begins letting her win every match. One day at training, she successfully defeats her brother in their combat training.
In both the comics and Norse mythology, Loki had been portrayed as gender-fluid. In Norse mythology, Loki was first recognized as a “shapeshifter” when Loki lived as a handmaiden for eight years. Loki's first mention as being gender-fluid in the Marvel comics was when he stole the female form of Sif.
Sleipnir is the eight-legged horse ridden primarily by the god Odin in Norse mythology. He is the son of the god Loki (in the form of a mare) and the stallion Svadilfari who belonged to the jötunn that built the walls of Asgard.
According to the myths, the evil Loki himself gave birth to Fenrir, after eating the heart of a giantess, the witch Angerbotha. After his birth, the gods received prophecies of disaster concerning Fenrir and his siblings. Even when Fenrir was a pup, the only god courageous enough to approach him was Tyr.
Loki then creates a plan to let Laufey, his biological father, into Asgard so the Frost Giant leader can kill Odin and retrieve the Casket of Ancient Winters, a weapon the Asgardians took from Jotunheim. Then, just before Laufey kills Odin, Loki slays his own biological father, proving where his loyalties lie.
Atreus and Loki have always been one in the same character in God of War, but the name has far less significance to both Kratos and Atreus than it does to the audience. Loki, as it was revealed, was the name that Kratos' wife, Faye, wanted to give Atreus when he was born.
The leading theories include the possibility of Deimos' birthmark being genetic and Atreus' scars being related, as well as possible self-scarification as a young Atreus was trying to look more like his father. Alternatively, it's just a coincidence, and Atreus got his scars in an accident or fight.
