Master Longtooth is a character briefly featured in the Netflix series Kung Fu Panda: The Dragon Knight. She is one of the Ancient Masters who crafted the Tianshang Weapons, with hers being the Whip of Endless Flame. Longtooth was one of the Ancient Masters living in Pangaea, during a battle between the Ancient masters and an unnamed group who wanted to seize power over the world of Pangaea The poor guy's just gonna get himself killed!Viper to the Furious Five. Viper is a major protagonist in the Kung Fu Panda franchise. She is a green tree snake who is a member of the Furious Five. Along with the other four members of the same group, she is a master of the Kung Fu martial art, restricted mainly to the snake style. She is voiced by who also voiced Silvermist and Callisto Mal in In Kung Fu Panda 3, there is an amazingly subtle reference to Viper's kindness. After Shifu announces that he will no longer be teaching kung fu at the Jade Palace, Po's first day as the new teacher truly sucked. His commands painfully injure all five of the Furious Five. Best Sellers Rank. #526,450 in Toys & Games ( See Top 100 in Toys & Games) #20,577 in Stuffed Animals & Teddy Bears. Brand. YBW. Model Name. Kung Fu Panda. Number of Pieces. 2. 1ZoVq.