Which film introduced Li Shan, Po’s biological father, to the Kung Fu Panda story?

Kung Fu Panda 2 introduced Li Shan, Po’s biological father, to the Kung Fu Panda story. He appears in the film’s final scene, setting up a major storyline for the next installment.

The sequel spends much of its runtime exploring Po’s memories and the destruction of his original panda community. After Po defeats Lord Shen and finds inner peace, the film cuts to a remote panda village, where Li Shan senses that his son is alive.

That ending functions as a direct bridge to Kung Fu Panda 3. In the third film, Li Shan travels to find Po and brings him into contact with the surviving panda community. The reunion complicates Po’s identity without diminishing Mr. Ping’s role as his adoptive father.

Li Shan’s first appearance is therefore not in the opening film, even though Po’s adoption and unknown origins are established there.