Duke and Sky are arch-enemies. They have been this way ever since they were born. In fact, the story goes that they were born on the same day and at the same hospital. When the nurse went to check on Duke a couple of days later, she found him staring at the baby to his right. And whaddya know? That baby was Sky and she was glaring at him. God only knows what a two-day-old Duke must have done to piss off my best friend. But he certainly did something and they’ve been enemies ever since.