While Blue is strictly better than the White and Yellow Cats in both healing and availability, the Black Cat can basically be acquired at the start of the game, so it's slightly more useful than the other two Cats. That said, Bolbat's damage + healing combo may prove more effective in earlygame, though the Black Cat has the advantage of not needing to be defeated to acquire.
|It feels good to be around a cat. Cautious by nature, but behaves gently once it becomes a pet. In battles, you get 10% HP and 15% MP recovered before every turn.|