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History: Thor is the bloodson of Odin, lord of the
gods of Asgard, and Jord, who is also known as Gaea, the
elder goddess of the Earth. Odin sought to father a son
whose power would derive from Earth as well as Asgard, and
hence he sought to mate with Jord. Odin created a cave in
Norway where Jord gave birth to Thor. Months after the
infant Thor was weaned, Odin brought him to Asgard to be
raised. From that time onward Odin's wife, the goddess
Frigga, acted as Thor's mother.
Not until recent years did Thor learn that Jord was his
mother. A severed eye of Odin once grew to great size,
achieved sentience, and informed Thor that another Thor had
existed before the current Thor's birth. This previous Thor
is said to have killed the Midgard Serpent, and to have been
killed himself by the dying monster's venom, at Ragnarok,
the destruction of a previous version of Asgard. Odin
himself was killed, but a new Odin appeared in the place of
several gods who survived Ragnarok, and it was this new Odin
who fathered the current version of Thor. Possibly these
previous versions of Odin and Thor were earlier physical
incarnations of the Odin and Thor of today. However, this
account of Thor's origin by the severed eye of Odin may very
well be entirely false. The eye's motives for constructing
such a story, if it is false, are unknown.
The young Thor was raised alongside Loki, who had been
adopted by Odin after Loki's father, the Frost Giant Laufey,
had been killed in battle. From childhood Loki was jealous
of Thor, and his hatred grew over the years to a wish to
destroy him. Thus began Loki's enmity for Thor, which
persists to this day. When Thor was eight, Odin sent him to
Nidalvelir, the land of the dwarves, to bid the dwarves
Brokk and Eitri to create three treasures for Asgard's
ruler. Among the three treasures that Brokk and Eitri
created was the uru hammer Mjolnir (although Loki sabotaged
the creation of the hammer so that its handle was made too
short).
Odin bestowed various enchantments upon the hammer,
including one that made it impossible for anyone to lift it
except someone who was truly worthy of wielding it. Odin
then declared that he was reserving the use of Mjolnir for
Thor, who would receive it on the day that great deeds of
selfless valor had proved him worthy of it. For years Thor
strove to become strong and worthy enough to wield the
hammer, and was responsible for many heroic deeds. Finally,
when Thor was sixteen, Odin presented him with the hammer,
declaring he was indeed worthy of it. Thor became Asqard's
greatest warrior.