Lenny Leonard's sister is the unnamed sister of Lenny Leonard.
In "The Burns Cage", Lenny asks for time off in order to attend his sister's funeral. It is unknown whether he was referring to this character or a second, unseen sister. It is also possible that Lenny was lying to get time off.
One of Lenny's sisters is seen in "Gorillas on the Mast" with Carl and Lenny with Carl's sister on the yacht. It's unknown if it's the same sister, as they have the same face but different hairstyles and hair colors.
- Episode – "The Blue and the Gray"
- Episode – "The Burns Cage" (mentioned)
- Episode – "Gorillas on the Mast"