I drew this during break while I was at work. To make it more fitting to Norse mythology, I decided to have Odin riding a sleipnir through the sky as well as his companions: the wolves Geri and Freki, and the ravens Huginn and Muninn. On the left, I drew a building based off of the Borgund stave church with lightning hitting the cross (that's on top of the building).
In terms of wielding a melee weapon, especially for being an elderly anthro, Jarl Olaf "Bloodthunder" Máttugurson is the mightiest (and second oldest so far at the appearing age of 73) Blood-Brother I've created. He was also the first Blood-Brother I drew that has a beard.

Optional Songs (all of which are by Amon Amarth):
Deceiver of the Gods
Raven's Flight
Twilight Of The Thunder God