Actor James Hong's dual role of Chinese Restaurant owner Chen and the Red Wizard in "Dragon's Secret" is a nod to his dual role as David Lo Pan and his ghost wizard counterpart in "Big Trouble in Little China."
Linda Cardellini, who guest stars in this episode portrayed Velma Dinkley in the live action Scooby-Doo (2002) movies.
James Hong was unable to attend the group recording session, so during the ensemble recording his voice was impersonated by Eric Bauza. George Takei was so impressed by Bauza's work that he later said to him: "You do a better Jimmy Hong than Jimmy Hong."
At the beginning when you first see the inside of The pawn shop you can see a mogwai from gremlins
Stephenie Sheh debuts into American animation for the very first time as Mi Lee!