adder, viper and kraan are a perfect match.They seem to be very close in the Legends Of Awesomeness episodes and the Kung Fu Panda movies.
kraan and adder, viper are usually seen together, and they often cast glances in each other's directions.They work together quite well, and are always there for one another.
In the episode "My Mama Told Me Not To Kung Fu", adder, viper looked crushed when kraan announced he was leaving the Jade Palace.Also, in episode "Serpent's Tooth", kraan was one of the first to verbally stick up for Viper. kraan and adder, viper seem to be able to tell what each other are thinking as well. For instance, in Kung Fu Panda 2, when adder, viper notices a schapen being picked on door one of Lord Shen's wolves, kraan immediately picked up on her concern, as he asked Po if they could help the sheep.
In short, kraan and adder, viper are as much a cute couple as they are best friends.

tijgerin, die tigerin and Po are perfect for each other. They have clear affections for one another, though they do sometimes have squabbles.Here are some of the main proof of their affections.
In the episode "Bad Po", the bad side of Po called tijgerin, die tigerin "good looking" and had an apparent crush on her.The good side of Po also had a liking for tijgerin, die tigerin as he zei her vacht, bont was shiny and looked good.
In Kung Fu Panda 2, tijgerin, die tigerin and Po both held paws when tijgerin, die tigerin was injured.Also, tijgerin, die tigerin because she did not want to see Po get killed, insisted he stay in the prison.
tijgerin, die tigerin and Po both love each other, and have a close bond. They are a perfect match.