This subject has been distinguished as part of the real world and therefore should not be taken as part of the fictional universe of the Kung Fu Panda franchise.
Legend of the Legendary Warrior is an animated video micro-series developed by DreamWorks Animation to celebrate the theatrical release of Kung Fu Panda. It recounts the adventures of the Legendary Warrior as he encounters various enemies, kung fu legends and historical sites.
To celebrate the upcoming release of Kung Fu Panda, DreamWorks Animation presents an animated comic book inspired video micro-series entitled the "Legend of the Legendary Warrior." The six-chapter micro-series recounts the tales of The Legendary Warrior, the most awesomeness Kung Fu warrior of all time. Follow the Warrior as he comes face-to-face with deadly adversaries, legendary kung fu heroes and through his travels discovers the birth place of kung fu.