SAW villain Tobin Bell's creepy movie puppet sidekick BILLY is such a hit in his household, the actor's young son will hit the streets at Halloween dressed like him. Bell will join his kid for Wednesday's (31Oct07) frightfest. He tells, "My son and a few of his friends will be wearing Billy masks. I guess he's really popular. "Last Halloween, I saw a lot of kids dressed like Billy. I always go over and say hello to them, which leaves them somewhat speechless. I guess they recognise my voice as Jigsaw's. "One of the kids in the Billy costume looked about 10 and he said, ' saw Saw 3 and it was great.' I said, 'Your parents let you see that?'"