Hermit Peng is basically a Jackie Peng, except it has a lot more attack power + health, and has Area Attack. Looks like a bald penguin with a beard and giant eyebrows. Attacks by spinning around in the air, dealing massive damage to all within its range. One thing to note is that he only appears at 100% strength magnification in one stage, Day Job = Boxers.
A good strategy to defeat the Hermit Peng is to spam meatshields such as Wall Cat and Macho Cat, while sending cats with high attack power and long range, such as Bahamut Cat and Dragon Cat, to damage it while staying out of Hermit Peng's range. Valkyrie Cat can also be used to defeat Hermit Peng, as Hermit Peng's range is not long enough to reach her from behind meatshields.