During the ending credits, a scene from every segment of every past episode of the "Treehouse of Horror series" (90 segments total) is shown in a countdown sequence (from Treehouse of Horror XXX (2019)'s "When Hairy Met Slimy" to Treehouse of Horror (1990)'s "Bad Dream House"). This was primarily done in celebration of the 30th anniversary of the "Treehouse of Horror series" as the original episode was originally released on October 25, 1990.
The third Treehouse of Horror episode to use CGI sequence, after Treehouse of Horror VI (1995) and Treehouse of Horror XXVIII (2017).
On the Radioactive Man action figure instruction booklet, the production code of the toy is stated as ZABF17, the production code for this episode.
Was originally scheduled to air on October 18, 2020, but was delayed until November 1 hours before its scheduled airtime due to baseball. It still aired in some regions of Canada.
This episode was screened virtually exclusively for 500 people who signed up on Decider on October 14, 2020, courtesy of Fox.