Greek man

Another Greek chappie was one of the owners of a Cerberus. In another pub give this Greek inidvidual his Cerburus to Rubeus Hagrid. Hagrid named the Cerburus "Fluffy". Hagrid and Albus Dumbledore used Fluffy to protect the Philosopher's Stone.

Behind the Scenes
In the film adapation of Harry Potter and the Philosopher's Stone introduces Hagrid this Greek as "an Irish fellow", rather than "a Greek Chappie". This is a giant foult of the film, because the Cerberus has a great role in the Greek Mythology.

Appearances
Harry Potter and the Philosopher's Stone

Harry Potter and the Philosopher's Stone (film)