Phillip Roger Vischer played nearly everyone in this series, he was also the main actor and creator of "Veggietales".
The characters "Reginald The Parrot" and "Professor Schniffenhousen" made no appearance in "Why Do We Call It Christmas"
"The Fabulous Bentley Brothers" are a comedy duo called "Rhett and Link".
This was followed by 3 direct-to-video specials, "Why do We Call it Christmas? (2011)", "Clive and Ian's Wonder-Blimp of Knowledge (2012)" and "Galaxy Buck: Mission To Sector#9 (2015)".