My Grey Hunter pack needed a bit of leadership, and so I opted to include a Wolf Guard Pack Leader, replete with a Power Fist - all the better for enhancing the richness of his own saga.
I wanted to add a few banners into the army, both for a bit more character and some added verticality. A lot of foot-soldiers doth not a variegated army make! Marching to the banner of the Ironwolf, these chaps make war with equal relish against the xenos, daemon and heretic alike.
Here is the aforementioned Power Fist - ideal for slowing you down in challenges! Hurray for the UNWIELDY special rule! Le sigh...
I also decided to equip him with a face, as these tend to be of great use among the ranks of the Adeptus Astartes.