At Monster High Deuce Gorgon is the son of Medusa. In Greek Mythology Pegasus was one of the 'offspring' of Medusa. I decide Deuce needed to meet his little sister. I know, I know the Pegasus of Greek Mythology is usually considered a boy. I wanted Deuce to be a big brother so I made Pegasus a girl. It's cuter this way. The background photo is from an old Sierra club calender.