Odin

Odin is a god in Norse mythology. He has many sons, but the most famous of them is Thor. Odin is often associated with wisdom, but also war, battle, victory, death, magic, poetry and prophecy, and overall his role in mythology is complex. Odin has similarities to gods in other tales, so it's hard to tell when stories refer to him. His attributes are ravens and a spear.

Journal Entries in Tomb Raider Underworld

During her adventures, Lara makes the following notes into her Journal about Odin:

Odin is the god of wisdom in Norse mythology, and father to Thor. In one account, he gained his wisdom by sacrificing his eye to the wellspring beneath the Yggdrasil, the World Tree. There he foresaw Ragnarök, the final battle that would destroy the world and the gods themselves, and also that even with his knowledge he would be unable to stop it.

In-game journal entry

On the wall is written "My son, your treasures here and far are protected by the dead - this gauntlet's twin, Megingjord, and the mighty Mjolnir - to keep Jörmungandr subdued." Whether the historical Odin was the literal father of Thor is not certain, but the two figures were related in some manner. Thor's hammer, belt, and gauntlets were apparently hidden throughout the world to restrain the Midgard Serpent, Jörmungandr. What this means exactly, amd the nature of the Midgard Serpent, are unknown. Perhaps the reference on how the arifacts are "protected by the dead" is a clue.

In-game journal entry