"Bye-Bye Baby" is a Riches segment that aired on the fourth episode in Season 2 of the Richie Rich cartoon series, as part of The Richie Rich/Scooby-Doo Show. The episode first aired on ABC on October 3, 1981.
Richie's parents are on their way to an opera. Richie is informed he has to look after a baby named Penny, who is left on the front doorstep by a guy claiming to be Papa Poorly. Little did Richie know that Penny was actually a male dwarf robber dressed as a baby girl, and whenever Richie was out of sight, Penny took advantage and made an attempt to rob the Rich mansion.
- In the comic book series, Richie has an infant cousin named Penny, who is the infant sister of Reggie Van Dough, and has a lock of hair over her forehead shaped like a dollar sigm. She does not appear in the animated series.