If you're up for a challenge, then look no further than "Chipper's Revenge"! This secret boss is incredibly difficult to defeat, with double the strength and health of regular bosses. What sets him apart is the fact that he has more than three abilities, making him truly formidable. To stand a chance against him, recruit Mister Chipper, a friendly-looking brown beaver, onto your team. Don't underestimate this boss - it's going to take everything you've got to come out victorious!