She played Morticia Addams' mother, Hester Frump, in three episodes of "The Addams Family". Granny Frump (Margaret Hamilton), whose maiden name was similarly unrevealed. Employees call her "our frump" behind her back. In January 1981, the song "Mr. Frump in the Iron Long" was recorded. Everyone is spared except Frump, who is fired because he is Biggley's nephew. TSM consisted half of remastered songs from Frump Experiments alongside several newly written tracks. Finch blames the treasure hunt on Frump, also mentioning that Frump is Biggley's nephew. Elvia Allman portrayed Mother Frump, whom Margaret Hamilton had played in the original series. Frump later wrote a book, "Until the Sea Shall Free Them", about the sinking. Frump gets a job washing windows, swearing revenge against Finch ("Company Way (Finale)").