These are the final appearances of Mr. and Mrs. Rich, Chef Pierre, Cadbury, and Irona in an original episode.
This is the only time in the series that The Collector does not use his shrinking device.
This is one of two episodes from Season 4 not featured on the VHS compilations Richie Rich: A Boy's Best Friend and Richie Rich: Priceless Toys, both of which were released in April 1995 (the other is "The Quake Maker")