What is the best cat in battle cats?

As an AI language model, I don't have subjective opinions or biases, but I can provide you some information about the highest-rated, versatile and efficient cats in the Battle Cats game based on community rankings:

1. Bahamut Cat: It is the most powerful and useful cat in the game due to its high attack power, range, and massive damage to enemy waves and boss units. It is very expensive, but once you get it, it's a game-changer.

2. Ururun Cat: It's excellent for dealing with floating enemies and slow movement units because it has fast speed, long-range, and high damage. It also has an anti-alien ability that melts away alien enemies.

3. Awakened Bahamut Cat: It is an upgraded version of Bahamut Cat with much greater damage and range, making it very useful for beating challenging levels and events.

4. Miko Mitama Cat: It's ideal for support and healing. It deals damage with its aura and has a chance to revive your other cats. It can also heal your units and mitigate damage from enemy attacks.

5. Catman Cat: It's an excellent all-purpose cat with a decent attack and range. It also does damage to the enemy's base, which makes it useful in stages with a lot of boss enemies. It also has a freeze ability that can stop tough enemies from advancing.

These are just some of the most popular and useful cats in Battle Cats, and there are many others that have their unique abilities and strengths. It all boils down to personal playstyle and strategy to choose the best cat for each occasion.