Standard Cats
Cat - Basic unit with a low summoning cost. Good for early in the game but quickly loses usefulness as you progress.
Tank cat - A great low-cost defensive unit with a minimum attack ability (5-10 damage on highest level). Use in groups as a shield for more powerful units who can attack from a longer range.
Axe cat - Quick on their feet with a good attack power and reasonable summoning cost, axe cats are great all-purpose attackers that only get better as they level up. Strong against red enemies.
Long legs cat - Tall and awkward in appearance, these cats are quite strong and can attack from a longer distance. Excellent when paired with tank cat for protection.
Cow cat - An extremely fast unit that is great for last-ditch efforts. Fast attack speed works well against fortresses.
Bird cat - A flying cat with a very weak defense but strong attack power.
Fish cat - Similar to the long legs cat, fish cat can attack from a greater distance than most cats.
Lizard cat - Essentially an upgrade of fish cat
Giant warrior cat - A massive unit with a high summoning cost. Makes up for it with immense power and defense. Has a long range attack.