OZ
We know very little about Daniel Osbourne or OZ except that he is a very quiet and private guy whos got a great sence of humour and brilliant guitar skills.
Oz failed his senior year and ended up re-taking it and graduating with the scoobie gang.
We also know that Oz is the former guitarist of band 'Dingos ate my baby' who we saw regularly gig at the
bronze.
Oz was bitten by his cousin who was unfortunalty a warewolf thus turning Oz into one. Once a month Oz was locked up as not to terrorise the town when he was a warewolf. Oz also had a very deep and very happy relationship with Willow which had a sad and hard break up when Oz met Veruca a fellow wolf who convinced him that he couldn't control his wolf side and would soon be completly taken over. Oz then left for Africa to get spiritual teaching and learn to control his Warewolf within. When Oz finally returned to Sunnydale evidently able to control the wolf as he was walking around in a full moon perfectly human he realises that it was his love for willow that brought the Wolf out and quickly left again leaving willow in pieces.