"The guys playing the clowns were both extremely nice," Jared Padalecki, who plays Sam, tells TVGuide.com. "One of them I'd already met before. A big, burly, powerful, awesome, nice fellow. The other one was an actual guy who had worked with the circus before. But once you deck them up and doll them up in costumes, they look pretty scary. There's a big twist to their costume, which you'll see. They're certainly not just big, happy clowns."