Coco fulfills the status role of the Pokopang group, as he has a guaranteed chance to weaken your Cat Units. Coco's weaken duration lasts for 100 frames and Coco attacks every 97 frames, so it is possible for cats to get stuck in a weaken lock if they are not knocked back. At his highest strength (Rainbow Blast! at 3 crown difficulty), he has 240,000 health and 20,000 attack power.
Stacking King Dragon Cats is sufficient for dealing with Coco if he is alone, because King Dragon Cat outranges him and has enough firepower for the job. A level 60 King Dragon Cat will kill a 200% Coco in twenty hits if protected. But if Pokota is also present, then it may be better to have a heavy-hitting cat like Crazed Bahamut Cat occupy the backline instead.