Absolute Anime

Fields	USA Info	Japanese Info	Image
Name	Puu	Puu
Alias
Race	Spirit Beast	Spirit Beast
Gender	Male	Male
Age
Hair	Blue feathers	Blue feathers
Eyes	Black	Black
Height	Starts at 1', grows to 12'	Starts at 30 cm, grows to 366 cm
Weight
Status	Yusuke's guide	Yusuke's guide
Quote
Voice	Justin Cook	Shiratori Yuri
Debut
Anime	Yu Yu Hakusho	Yuu Yuu Hakusho

The above info came from Smileyjill, and was edited by yours truly (contact me). The image came from Animes Universe.

Puu is the blue bird-like creature who hatched from the egg Yusuke received in the ordeal to win back life after his first death. He is the very creature who serves as not only a guide to Yusuke, but also a mirror reflection of his soul. Whatever ordeal Yusuke is going through, whether it be an emotional thing or a physical thing, Puu serves as an indicator to his friends.

In episode 91, after Yusuke dies again, we see Keiko trying to hold Puu while he's gloving and starting to levitate away in the air. She loses the grip and follows him floating trough the air over the city before he suddenly stops for no apparent reason. Puu then starts to glow brightly and transforms into a Giant blue bird with two tails. Puu then starts flying away to Yusuke. When Yusuke is being "reborn" Puu comes and shield him from the blast of the special forces when they try to kill Yusuke again. We then see Puu as a giant blue Phoenix, looking strikingly familiar to a swan. After some talking Yusuke and Koenma jump on Puu and fly into the Makai.

Because of Puu, being Yusuke's inner soul, he is always with Keiko whenever he can be.

The above description came from Smileyjill, and was edited by yours truly (contact me).