Odin

As you gaze at Odin, you realize how insignificant you truly are.
He towers over you, and is so intent on his activities that he
barely recognizes your presence.

Holds:
Draupnir
Gungnir

Directions:
To get to Olympus now you have to travel through the Astral Plane, so it's 8u n and either you already have a pearl wand or you kill the mob there and get one. It's good to keep so that you don't have to bother with him each time. Unlock the gate and step north into the plane. Track messenger and when you reach him, say will you take me to olympus? From there, it's 5n, 3w.

Notes:
Odin gouges, bring trues. As ever in Olympus, beware of the thieving citizens - close the door behind you and they won't get in. Odin's physical attacks aren't very strong but he has some nasty gas and elemental spells. Either have some spells like acidward, grounding, blazeward and inner warmth to counter these, or do what all the cool kids do and poison him first. If he's poisoned his spells don't do quite so much damage, but don't let him get to the last stage of poisoning (so no more than 10-15 minutes) or it's actually harder.