Norse Mythology: Leader of the Aesir. Odin had a myriad of names including Allfather, Ygg, Bolverk [evil doer], and Grimnir. He also had many functions including being a god of war, poetry, wisdom, and death. His halls were called Gladsheim Valaskjalf and Valhalla. Odin's high seat, Hlidskialf, was in Valaskjalf. It was from this throne that he could see over all the world. Valhalla is where he gathered his portion of the slain warriors, Einheriar, whom the valkyries had chosen.
The valkyries would serve mead which forever flowed from the udder of Odin's goat, Heidrun. They also served the warriors meat that came from the boar Saehrimnir, which the cook Andhrimnir would prepare for eating by boiling it in the cauldron Eldhrimnir. The boar magically came back to life before the next meal. After eating, the warriors would go outside the hall and fight each other to the death. They were, of course, brought back to life before the next feast. All of this fighting was practice for when Odin would lead the Einheriar in the final battle, Ragnarok.

Odin had a spear named Grungir which never missed its mark and a bow which unleashed ten arrows with every pull. He also owned a magic ring called Draupnir which created nine of itself every night. It was this ring that Odin laid on his son Balder's funeral pyre and which Balder returned to Odin from the underworld. Another one of Odin's prized possesions was his wonderful steed named Sleipnir which had eight legs.

The horse was the offspring of Loki, who in mare form seduced a giant's horse named Svadilfari. Sleipnir could travel to the underworld and through the air. Odin also had two wolves, Geri and Freki, and two ravens, Hugin [thought] and Munin [memory]. He sent his ravens out every day to gather knowledge for him.

Odin sacrificed himself for knowledge by hanging on the world tree, Yggdrasil, which means Ygg's horse. Ygg is a name for Odin and horse is a metaphor for the gallows. He thereby learns the runes. Another sacrifice he made for wisdom was his eye. He gave it up in order to drink from the Well of Mimir which bestowed great knowledge. Because of this, he is typically depicted as having one eye. He is also depicted as wearing a cloak, being old, having a long grey beard, and wearing a wide brimmed hat down low over his face to conceal his one-eyed visage.

Odin was destined to die at Ragnarok; Fenris-Wolf swallowed him. Knowing his fate, he still chose to embrace it and do battle. Showing the true warrior ethic. He was the god of warriors and kings, not the common man. Many heroes genealogies start with Odin, including Sigurd. His name is not found in many place names and therefore it is believed that not many people worshipped him. He was thought to be a traitorous god, as shown in the sagas, who would strike down a warrior at his whim.

(Nicole Cherry, A list of Norse Beings, http://www.ugcs.caltech.edu/~cherryne)