Tai Lung

Tai Lung was Shifu's former student, and the first to be currupted by Cobra (other then Cynder, and almost Alex the lion) he, with help from the villain leagers, got out of sure ghum prison and was ablr to almost made the villay of peace pay for what he claim is an un-justaviced rejection from Oogway.

he proofed to be too much of a wrothy foe to the five, and used his nerve attacks to stun then all but crane, as he planed to have him to delever his palorliesd comrades to Shifu.

he was about to kill shifu had not for Po and the Shell Louge squad, who kept the villain leage from helping, and Po ultamately defeats Tai Lung.

however, Dark Cynder revived him and Tai Lung (irreguardless of his defeat) is among the strongest physitcal warriors at her disposeal.

he made a cameio appearnce in Spongebob and friends and the emperors new groove, he wanted the honor to claim Shenzi's soul, beleaving the soul of a demon slayer will bring back the slay-ee, but was defeat by the five and others.

he had a more major role as Alameta slim's partner, aside from Mukanga, and Galaxhar, his new found buddies (well, they are dreamworks villains, right?) but they were all ultamately defeated.....

but it doesn't mean Tai Lung's gone for good, the villain leage has a fetish to bring back fallen members, saves time and money getting replacements, unless if said members are traders, or were reformed by good guys.