There are 3 wolves, 3 kaiser wolves, and 1 Fenrir. They all have decent elemental resistances for all elements, except fire.
Fenrir is weak to strike, while the wolves are weak to slash.
The wolves often uses single target attacks that can inflict poison, and a debuffing attack, Roar, that reduces your ATK and MAG.
Fenrir often uses wide area ice attacks, and he's immune to all status ailments, except for blind.
Soon...
UR Units & Tier List
Warrior of Light
Equipment Guide 2: Level, Awakening, and "+"
Steal
Holy Bravery
Cloud (FFVIIR)
Thunder Blade