Roger is shown being a jerk in a diner in Cedar City, Iowa in 1956, The Motor City Roller Rink in Detroit Michigan in 1975, and a coffee shop in Seattle, Washington in 1994. Roger's disguise in the coffee shop bears a resemblance to American singer-songwriter, Kurt Cobain.
In "American Dream Factory", Toshi's sister Akiko appeared. In this episode, she appears to be taller and older.
Though this episode introduces that he is allergic to shellfish, Stan ordered shrimp in "Meter Made" and had lobster with his family at the mall on "Family Affair". In addition, Roger should have already known Stan was allergic to shellfish when he obtained all of Stan's memories in "Roger 'n' Me".