At the time Po began to improve quite fast in the art and even dazzled them with a few tricks of his own, a style created for his type. It was the contrast between the ladies that surrounded Po that Crane kept an eye on. Tigress is a hard style, kind of woman, she's direct and honest but even though her brash and harsh treatment scares others away from her, she never fails to give up on a student that wants to learn.
Viper on the other hand, she is a softer style; she's gentle and kind and tries to hold back an honest truth because she wishes not to hurt their feelings. But snakes are not like tigers, they will not use brute force to get out of a situation. The art of manipulation and patience are their forte. A snake will wait for their attack while a tiger will take the opportunity as it is.