Tai Shan is a Red fox boy, who, as an orphan, was adopted by Po and Tigress as their son. As a fox, he is clever and cunning. When the family becomes China's ruling family, he becomes heir to the throne. He loves the stories of his parents' past, and is often heard listening to the warnings of his uncle Tai Lung not to go down the path of anger and vengeance. He is the brother of Yue Yue the bunny, Jun and Kun the goats and Huang Lin the sheep. He is the heir to the imperial throne.
- His name means "Great Mountain".