Although the voice actors for Shaggy, Daphne, and Velma have provided the voices of those characters in recent Scooby-Doo cartoons, Frank Welker has been voicing Fred since Scooby Doo, Where Are You! (1969) and took over as Scooby in 2002. Welker is the only actor from A Night of Fright Is No Delight (1970) to participate in this episode.
As production for the episode began during season 12, the animated Castiel is wearing his striped tie outfit from seasons 9-12, due to production being unaware he would be getting a costume change in season 13.
When Jay is arrested, it says Crystal Cove Police on the side of the police car. Crystal Cove was the town where all the mysteries took place in Scooby-Doo! Mystery Incorporated (2010).
The bag Castiel drops with the fruits of life are actually mangosteens
(As of June 2018) At 9.7, it is the highest-rated episode in 7 years - since 6.15 'The French Mistake.' They are also tied with 5.8 'Changing Channels' and 5.22 'Swan Song'