Sonic Channel Bark the Polar Bear desktop wallpaper:
NAME: バーク・ザ・ポーラーベアー (Bāku za Pōrābeā )
ENG. NAME: Bark the Polar Bear
NICKNAME: 'Baku' ("Bark")
SPECIES: Polar Bear
HEIGHT: 181 cm
WEIGHT: 120 kg
AGE: 17 Years
ABILITIES: Powerful strength
LIKES: Bowling, Silence
Bio estimated according to games characters from practically any source I could find (it is Bark). The rest is just a wild guess.
Full sized 'download' version is 1280*1024.
EDIT (21st March 2008): Updated according to edits made to pic, also made the background less floresant.
Bark and other Sonic characters are copyright of SEGA.