- Daphne, Shaggy, and Scooby are overjoyed to be reunited with Flim Flam, and he's equally happy to see them, if not more so.
- When the gang sees an exhausted Vincent, Flim Flam is the one who goes towards him first. He also promises to leave Mortimer's name out in the retellings of Asmodeus. The fact that he and Vince share a goodbye goes to show how much the past adventure truly meant to Flim Flam McScam.
- Daphne gives Flim Flam a small kiss on the cheek when she sees the case of Losta Luck Joy Juice, undoubtedly remembering how he saved her from becoming a werewolf in the first episode of The 13 Ghosts of Scooby-Doo.
- Vincent tries to warn Mortifer about the avalanche his car will cause, despite learning how his old friend had betrayed him.
- Flim Flam was a hustler in the original series - this movie reveals that he's turned that over, has a stable job in a shop, and actually sold stuff to Daphne, Shaggy and Scooby and didn't swindle them.
- In a meta sense, fans have praised Noshir Dalal for voicing Flim Flam, with Noshir thanking the fans in return.
- Daphne mentions selling "bottles of snake-oil" at a garage sale. What use does she have for bottles of snake-oil? She doesn't have a use for them. She kept them because they were mementos of Flim Flam.
Heartwarming / Scooby-Doo! and the Curse of the 13th Ghost