Fred assigns himself, Shaggy and Velma, with the code names Ascot One/Ascot Boy, Fuzzface and Glasses Girl, respectively.
When Santa Claus quits he says, "I studied under the great Sunderman!" Collette Sunderman is Casting Director and/or Voice Director on many Scooby-Doo movies and TV series, including Scooby-Doo! Haunted Holidays.