Richie and Gloria have no voice roles in the "Robot Bug Guards" segment.
Gloria has a non-speaking cameo - wearing a fancy dress - in the "I Say You All" segment.
The "Robot Bug Guards" segment was adapted from a one-page story in the comic book Richie Rich and Gloria #22, which was republished in late 1981 when this segment was produced.
Alfalfy, Thistle and their pet pig No Cents were previously seen in the Riches segment "Poor Little Richbillies".
The name of the hillbilly equivalent of Irona is revealed as Daisyrona in this segment.