Rowling also imagined a supporting cast of adults. The headmaster of Hogwarts is the powerful, but kind wizard Albus Dumbledore, who becomes Harry's confidant; Rowling described him as "epitome of goodness".[6] His right hand is severe Minerva McGonagall, who according to the author "under that gruff exterior" is "a bit of an old softy",[7] the friendly half-giant Rubeus Hagrid, who saved Harry from the Dursley family and the sinister Severus Snape.[9] Professor Quirrell is also featured in the novel.