The Sandman would be used in various cartoons when I was a kid so the aspect was known. There was no Sandman show regular character etc. Sorta like the tooth fairy showing up in part of 1 episode.The Sandman is a fifteen minute childrens show. It used to come in some unusual vehicle or riding on an animal, then a little educational story gets told and then the Sandman opens his sack to throw his sand, which lands in the children's eyes to make them sleepy, before he gets back into his vehicle to take off. The East and the West TV version of Sandman looked differently, so when children were asked what the Sandman looked like, it would tell which TV the parents were watching and the family would have been reported to the authorities.
I suppose Sandman is not a Canadian tradition?