These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Designated Villain: Chaos is less evil than most of the Virtuous Beasts and him winning is one of the more benign outcomes for humanity.
Game Breaker: Amusingly averted. Overusing any special attack causes a "No Cheese" symbol to appear on screen, and stops that move from working for a little while. This is a basically a tongue-in-cheek version of the Spirit meter from Art of Fighting.