Note that Imperial is not related Imperial Toy Corporation which made bubble making products in the 80's related to The Real Ghostbusters.
The Real Ghostbusters Slumber Mate was released in 1989. It was sold in a series of "slumber" related items in Sears 1989 Christmas Catalog. In America, it was released by ERO Industries, while it was released by Imperial in Canada.
- On page 17 of Teenage Mutant Ninja Turtles/Ghostbusters Volume 2 Issue #4, in panel 2, the The Real Ghostbusters Slumber Mate makes a non-canon cameo on the table.
- On page 9 of Teenage Mutant Ninja Turtles/Ghostbusters Volume 2 Issue #5, appearing again, on the console behind Peter is the duffel bag based on The Real Ghostbusters Slumber Mate.