Grimbeorn carries the ring. Load him up with a Gondorian Shield, some Dunedain Warnings, War Axe, Firefoot, a Golden Belt, an Armored Destrier, Strength and Courage, and Inner Strength. He turns into a 8 defense, 12 attack machine.
Aragorn quests and handles combat well as well. Getting him Blood of Numenor and Gondorian Fire can make him even scarier than Grimbeorn with the help of Steward of Gondor and Arwen.
Arwen quests, provides resources and access to spirit.
The deck doesn't typically quest for more than 17, but if he has enough Unexpected Courage, Grimbeorn can also quest for 4 additional willpower.