He appears in the CIA blooper reel in "Phantom of the Telethon". He complains to Stan in the CIA drone hanger about people taking lunches in "Home Adrone". In "My Morning Straitjacket", he appears as concert security as Francine flashes her breasts to get into a My Morning Jacket concert. Thanks to Stan, he fails in his attempt to get out of jury duty in "The People vs. Martin Sugar". Quackenbush appears in a wedding announcement when Marguerite tires to research the hot tub in "Hot Water" and is also in attendance at Principal Lewis' planned wedding to Ellen Riggs in "The Worst Stan".