Master Viper is a snake who is one of the main protagonists of Buck and Izzy meets Kung Fu Panda, its sequel and Manny, Sid, and Diego's Adventures of Kung Fu Panda.
Although she has a serious birth defect for her species, being born with barely visible venomous fangs, she compensates with her strength, sinuous nature, beauty, and precision. In defiance of the villanous stereotype of snakes, Viper is the most charming, kind, compassionate, and sweetest of the Five as demonstrated with her quickly developing empathy for Po as his indomitable tenacity became obvious. During her younger years, she was born the love daughter of Great Master Viper, protector of the village where she lived who relied on his venomous fangs to fell his enemies with his awe-inspiring awesomeness of his Poison Fang Technique.Her father hoped she would carry on his legacy once she was born, but she doesn't have no fangs and never developed them as she grew up, much dismay to his father. To make her father feel better, Viper took up ribbon dancing at the age of 6, blossoming into the best dancer in the village. During one Autumn Moon Festival, Viper was too timid to go to the festival and stayed home with her mother, but when her father fought against a gorilla bandit who attacked the village and used poison-proof armor and shattered the Great Master's fangs, Viper, after seeing him in trouble, mustered the courage that she needed to defeat the gorilla by confusing him with her dancing skills and tying him up with her ribbon. Thus, her father's legacy was safe with his daughter becoming a mighty warrior on her own terms. She can be a sister to the Sub-zero Adventure Squad and her cousin/uncle is Larry The Anaconda, since they are both snakes (since Manny, Sid, and Diego's Adventures of The Wild).
Viper is voiced by Lucy Liu.
She would also make her guest appearence in the Danny Phantom/Shrek crossover Danny Phantom and Shrek's Adventures of Rio, as well as the several episodes of Captain Charles T. Baker's Adventures of Kim Possible and other projects outside of the Manny, Sid, and Diego's Adventures Series