The Devil Kronk is the opposite of Angel Kronk, and both side on Kronk's shoulders, the Devil being on the left.
Devil Kronk made two appearences in The Emperor's New Groove, trying convince Kronk to kill Kuzco as Yzma orders him too. However, at the end, after Yzma makes Kronk upset over her never loking his spinitchpuffs, the Angel and Devil work together to convince Kronk to kill Yzma with a shandalire, though Yzma's skinniness saves her and Kronk and his consincness fall through a trap door.
Devil Kronk would then return as the secondary antagonist of Kronk's New Groove, trying/failing to get Kronk to do the selfish things to get his thumbs up from his pappy.
|You Poor Unfortunate Soul, this "Devil Kronk,"|
has been found to need Ursula’s Touch.
IT MUST BE REWRITTEN OR ADDED, TOO!!
So says Ursula:
the true queen of Atlantica.