Despite scenes set at the Comic Book Store and the Wolowitz's residence, Stuart (Kevin Sussman) is absent from this episode. However, Brian Thomas Smith, a previous regular guest star, makes another appearance as Zack, his first since The Fermentation Bifurcation (2016) a year before.
Lowest rated episode of the series
Oddly, and for the first time in the whole series, a previously used Vanity Card is displayed (#552 from The Allowance Evaporation (2017)).