Debuff some bosses

Ive Benin playing battle cats since the first version but around version 2 I couldnt do anything so I had to restart the whole game.
I had beaten bun bun before and now hes way harder to defeat and I have 3 of the basic cats true forms.The true forms of the lizard gross and Titan cats.And I can only get him down to 78% before he kills me.Please Debuff him

Fix Teacher Bun Bun about The Battle Cats, v5.1.1