- Cameo Prop: Some of the numerous hatboxes in Sidisney's Hatbox Fort are alternate versions of Hattie's hatbox as seen in other people's fan art.
- Keep Circulating the Tapes: Kelly Green seems to consider her earliest Haunted Mansion comics terrible and deleted them for DeviantArt. Emma Mosier also deleted some of her early Phantom Manor doodles after being harassed by shippers who shamed her for her "Phantom/Melanie" AU. Fortunately, through a combination of fans having made personal copies on their hard drives and the ever-useful Internet Archive, most of those comics have been relocated and copies can be seen on the wiki.
- Magnum Opus Dissonance: Kelly Green has deleted some of her funniest comics over and over again, forcing fans to go out and tell her they love it and want it back every time. Even this failed for a few comics, but fortunately the fans Keep Circulating the Tapes.
Trivia / The Mansionverse