Bian Zao is the 13-year-old son of Taotie. He would reluctantly help his father in his revenge plots on Master Shifu.
In "Big Bro Po," Bian Zao ends up staying at the Jade Palace when his father is in Chorh-Gom Prison. Master Shifu ends up appointing Po to watch of Bian Zao despite the suspicions of Bian Zao. Po tries to find common ground with Bian Zao until it came to Po baking with Mr. Ping. Bian Zao stated that he had wished that his father would do something with him that doesn't involve destroying the Jade Palace. Bian Zao and Po end up visiting Taotie at Chorh-Gom Prison. Taotie convinces Bian Zao to make a bunch of cakes that would help him break out of Chorh-Gom Prison. Bian Zao unknowingly goes through with his father's plans by sneaking the parts of the Iron Claws of Doom into every cake he made. Despite his father's claims, Bian Zao thinks that his father would not go by his word not to do any other than attack the Jade Palace. Bian Zao ends up confessing to Po about Taotie's plot. When it came to a stalemate between Po and Taotie, Bian Zao ends up using a flying contraption to pick up Taotie who ends up knocking off the lubrication hose. Both of them managed to get away as Po claims that he brought Taotie and Bian Zao's family back together.