Gorgon

A magical creature with the ability to turn anyone who looks at it into stone. The most famous Gorgon was Medusa, who was supposadly slayed by the great hero Hercules. Gorgons look like very ugly women, with a mane of snakes for hair. In 1991, Hagrid used the expression "Galloping Gorgons" when he remembered that he had to send an owl to Albus Dumbledore, saying that he found Harry Potter.