Kung Fu Panda: Secrets of the Masters is a 2011 animated short film from DreamWorks Animation. It was released December 13, 2011, as a special feature attached to the Kung Fu Panda 2 DVD and Blu-ray. The short consists mostly of a traditional animation (17 minutes), created by Duncan Studio. It uncovers the backgrounds of the masters of Gongmen City: Master Thundering Rhino, Master Storming Ox, and Master Croc.A significant feature has Jack Black, Dustin Hoffman, Angelina Jolie, Seth Rogen, Randall Duk Kim and Dennis Haysbert reprising their roles from the movies. However, Jean-Claude Van Damme and Victor Garber did not reprise their roles from the sequel.