The Battle Cats trait boss battle: Red vs Aku 

FYI, the bosses appeared in the battle are
Red: Black Okame, Hannya, Infernal Pegasus Deonil, Li'l Nyandam (Enemy), Professor A., Berserkory, Capy, Johnnyleon, Red Cyclone, Casaurian Ahirujo
Aku: Sathankhamun VIII, Possessed Empress, Deathkory, Infernal Tyrant Nyandam, Lord of Ruin Jagando, Aku Cyclone, Vermilingua Rangmaster, THE FOLIVOREAN, Malevolent Jamiera Cat, High Priest Mamon
(All names are from the Battle Cats Fandom Wiki)