This was a beautiful end to the Kung Fu Panda series! The plot was fun as it followed Po's journey to fight his final villain, and his successor has potential. Hopefully we can get some movies following her growth into the Dragon Warrior.
I do have some complaints. The Furious Five were absent the entire movie until the training montage at the end, which was a disappointment considering their importance throughout Po's journey.
The final battle was full of action, but the Chameleon didn't have any connection to Po at all. Unlike the previous villains who had either connections to his mentors or Po's past, the only reason she wanted to defeat Po was to get his staff. I guess she had connections to Zhen as her mentor, but Zhen would have never met Po if it wasn't for the Chameleon's schemes.
All in all, this was a good movie, with decent character growth, and it was fun seeing the past villains return for the finally. Too bad we couldn't see them team up to defeat the chameleon. That would have been spectacular.