Simon & Marcy "everyone [working on the series] was pitching in to make this one special". The episode features the voice of Ava Acres, who portrays the young version of Marceline. Acres had previously appeared in the third season episode "Memory of a Memory". As mentioned above, the episode makes notable use of the 1982 song "Where Everybody Knows Your Name" by Gary Portnoy—better known as the theme to the sitcom "Cheers". According to Sugar's father, Rob, on his official YouTube channel, the use of the song started merely as a placeholder. However, as the episode developed, Sugar decided to keep it in
Daniel A. Portnoy Foundation, and numerous honorary keynote lectures. In 2013, Portnoy's contributions were recognized by his election to the National Academy of Sciences. In 2017, Portnoy became an Elected Fellow in the National Academy of Inventors. Dr. Portnoy has three children, Eleanor Sophie Portnoy (born 1996), Herschel Michael Portnoy (born 1999), and Anna Rose Portnoy (born 2001). His wife, Anna, is a conservation biologist. His father, Bernard Portnoy, M.D. (1929-2015) was a Professor of pediatrics and infectious diseases at USC; his mother, Roslyn Portnoy (born 1931) lives in Dana Point, CA and sister, Deborah Brown (born 1953) lives in Sherman Oaks, CA.