Ox will probably be the last character to attack in battle, since his agility is the lowest in the group. However, Ox makes up for this by being having a high initial attack power, defense, and a mass amount of HP, even higher than Bo's! Even though his attack may reach up to the near 400s, the damage dealt in battle seems unrealistic compared to what his attack power really is. Nevertheless, Ox will probably be used a lot before you get Bleu, while Karn is fused as Shin. Even though Ox may not be the best character, overall, his attack power and defense, not to mention HP, makes him a suitable character to place in the front row where he can be used as a 'punching bag' for enemies. Ox does possess two recovery-type spells, although they probably won't be used often since Ox has little in the AP department. Ox can perform other unique abilities outside of battle, which you can view here.