"Skeletons in the Water Closet," a segment from the Grim & Evil premiere on August 24, 2001, introduces Gladys, Billy’s panicked mother who believes her son has turned into the Grim Reaper. This early Hanna-Barbera production established a lasting comedic dynamic of suburban chaos in what became The Grim Adventures of Billy & Mandy . For more details, visit Fandom .
