|Prince of Lienid|
|Full Name||Prince Greening Grandemalion|
|Family|| King Ror (father)|
Prince Silvern (fifth eldest brother)
|Age||Nineteen or twenty (Graceling)|
|Eye Color||One silver, one gold|
|Weapon/Skill||Graced with perception|
He is initially believed to be Graced with hand fighting, but it is revealed that his true Grace is perception. He is able to sense the world around him and the thoughts of others, but only when they are directed at him. These senses come to him automatically and he has no control whatsoever with his ability. Po was forced to hide his Grace's true nature at an early age by his mother for fear that others would be tempted to use him for their own gain.
He becomes blind as a result of his fall in Monsea. Upon embracing the full nature of his perception, it enables him to hide his blindness from all except Katsa and eventually evolves to a form of clairvoyance that gives him an omnidirectional sense of everything around him.
He is described as a dark haired young man of no more than nineteen or twenty years of age with sundarkened skin with one silver eye and one gold eye. His ears are pierced and he wears a pair of gold hoop earrings at all times and wears ten rings on his fingers. His upper arms are adorned with a pair of tattoos that he tells Katsa are meant to be found attractive, and to be seen only by the woman he will marry.