Oblivion looks powerful when he attacks.  I made a few existing pets of mine battle ready:  Drudgen, Sword of Nulgath, Larvae of Nulgath for instance.  Crag and Oblivion Blade have easy quests to grab a battle version of them too. The code that keeps their quests private didn't allow me to make the original pets battle ready.  I also added some new items to Juggernaut and a few other surprises in my zone you'll have to find for yourselves.  Have fun!