Joe Manganiello hosts a D&D party for other actors and directors.
Kevin Smith is called 'Podcast' by Joe Manganiello, and Leonard mentions Smith being on Wil Wheaton's podcast. Leonard himself was once a guest on that podcast in The Fortification Implementation (2015), where Smith made his debut on the show, now making his first on-screen appearance.
In an interview with People magazine, Joe Manganiello said that during the Covid-19 quarantine he actually did play D and D.
Howard once again does impersonations of famous people, like he did during the D & D game in The Love Spell Potential (2013). Simon Helberg used to do celebrity imitations as part of his comedy act.