Frank Welker has voiced hundreds of characters during a career that stretches across more than five decades, but one of his longest-running roles is also the one that helped start it all. When Scooby-Doo, Where Are You! premiered in September 1969, Welker was the voice of Fred Jones. Fifty-seven years later, he remains closely associated with the Mystery Inc. leader and has followed the franchise through numerous television series, movies and reinventions.
Welker recently looked back at that history while revealing his favorite Scooby-Doo episode. Rather than choosing one of the mysteries from the original series, he selected the 2021 Scooby-Doo and Guess Who? episode “A Haunt of a Thousand Voices!” The choice is particularly fitting for a performer who has spent so much of his career behind animated characters. The episode brought Welker and several of his fellow Scooby-Doo voice actors into the story as animated versions of themselves, turning the people behind Mystery Inc. into part of the mystery.
Fred Jones Became Frank Welker’s First Animated Character
Fred was Welker’s first animated character, arriving before the enormous collection of roles that would eventually make him one of the most prolific performers in animation. During the original casting process, Welker initially had his attention on Scooby-Doo rather than Fred, but he ultimately auditioned for the human leader of Mystery Inc. and landed the part. His performance debuted alongside Don Messick as Scooby-Doo, Casey Kasem as Shaggy Rogers, Nicole Jaffe as Velma Dinkley and Stefanianna Christopherson as Daphne Blake. Heather North subsequently took over Daphne beginning with the second season.
Fred also stands apart from many of the performances for which Welker later became known. Over the course of his career, he developed a remarkable specialty in creatures, animals and characters requiring highly stylized vocal performances, with credits ranging from Megatron in Transformers to Abu in Aladdin. Fred, by comparison, has generally remained much closer to Welker’s natural speaking voice. The character’s confident delivery helped establish the straight-laced leader of a group otherwise filled with more exaggerated personalities, particularly the comedic partnership of Shaggy and Scooby.
That relatively natural performance has remained attached to Fred through dramatic changes in animation and children’s television. Welker continued playing him through many subsequent Scooby-Doo series, specials and direct-to-video productions, making his connection with the character unusually durable. There have been exceptions, including different performers in projects such as A Pup Named Scooby-Doo and the 2020 feature Scoob!, but Welker has repeatedly returned to Fred as the franchise has been reworked for new generations.
Welker’s Favorite Episode Put the Voice Actors Inside the Mystery
With such a large catalogue to choose from, Welker’s selection of “A Haunt of a Thousand Voices!” as his favorite offers an unusual glimpse at what stood out to him personally. The Scooby-Doo and Guess Who? episode aired in 2021 and featured Welker alongside Grey Griffin, Matthew Lillard and Kate Micucci, who voiced Daphne, Shaggy and Velma respectively. Instead of limiting the actors to their usual characters, the story introduced animated versions of the performers themselves.
The episode played with the relationship between the fictional gang and the real people responsible for their voices. Its mystery involved a voice convention and a monster capable of imitating voices, making voice acting part of the plot rather than something hidden behind the animation. Welker’s animated counterpart even lived in a fictionalized mansion filled with references to his career. For an actor who had already spent more than half a century playing Fred by the time the episode arrived, the premise provided an opportunity for the franchise to acknowledge the performers who had helped keep its characters recognizable.
It also reflected how much the cast surrounding Welker had changed. The performers appearing with him represented a more recent generation of Mystery Inc., yet Welker himself connected that group directly to the original 1969 production. Few animated franchises have retained one of their original principal performers for anything approaching that length of time, particularly while repeatedly redesigning, rebooting and reinterpreting the characters around them.
The Original Voices Helped Define Mystery Inc.
The original Scooby-Doo cast established vocal characteristics that became nearly as recognizable as the characters’ visual designs. Don Messick gave Scooby his distinctive speech patterns and personality, while Casey Kasem’s Shaggy became an equally important half of the franchise’s central comedy pairing. Nicole Jaffe’s Velma established the intelligent and practical member of the group, while Stefanianna Christopherson and later Heather North helped shape Daphne. Welker’s Fred completed the ensemble as the confident mystery solver who regularly organized the gang’s plans and elaborate traps.
Several of those actors remained associated with their characters well beyond the initial series. Messick continued voicing Scooby for decades, while Kasem’s tenure as Shaggy extended across multiple eras of the franchise. The cast nevertheless changed gradually as new productions appeared and new performers inherited the characters. Matthew Lillard, who first played Shaggy in live action in the 2002 Scooby-Doo movie, eventually became one of the character’s principal animation voices. Grey Griffin became a long-running Daphne beginning in the early 2000s, while Velma has been interpreted by a succession of performers that eventually included Kate Micucci.
Welker consequently became an increasingly unusual constant within a changing ensemble. New actors could join him while playing characters whose original performers had once stood beside him in the recording cast decades earlier. That continuity is one reason a modern Scooby-Doo production can sound both familiar and different at the same time. Even when the animation style, supporting cast or interpretation changes, Welker’s Fred has often provided a direct vocal connection to the earliest version of Mystery Inc.
Frank Welker Eventually Became Scooby-Doo Too
Welker’s relationship with the franchise became even more remarkable when he added Scooby-Doo to his responsibilities. After Don Messick’s long tenure ended in the 1990s, several performers voiced Scooby in different productions before Welker assumed the role in 2002. The actor who had started his animation career playing the human standing beside Scooby was now responsible for both characters.
The two roles showcase very different sides of Welker’s abilities. Fred remains comparatively close to his regular voice, while Scooby relies on the specialized character and creature work that became one of Welker’s trademarks. Performing both also means that conversations between Fred and Scooby can effectively become Welker acting opposite himself, maintaining two immediately distinguishable characters within the same scene. His work as Scooby has since become a major part of the franchise, giving him responsibility for its title character in addition to the role he originated.
The change also connected two different generations of Scooby-Doo history through a single performer. Welker worked alongside Messick when the latter was defining Scooby for audiences, then eventually inherited the character himself while continuing to play Fred. He therefore carries firsthand experience of the original Mystery Inc. cast into productions made decades after the first series ended, even as other roles have passed through multiple generations of actors.
The Voice of Fred Has Followed Scooby-Doo Through Generations
Part of Scooby-Doo’s longevity comes from how easily its central idea can be reinvented. The gang, the Mystery Machine, supposedly supernatural threats and the eventual unmasking of a culprit created a formula flexible enough to survive changing animation styles, different comedic approaches and repeated shifts in the voice cast. New productions have been able to experiment with the concept while retaining enough familiar elements for audiences to immediately recognize the franchise.
Welker has described that familiarity as part of the show’s staying power, including the recognizable voices that accompany the characters. His own career offers an unusually clear example. The actor who first stepped into animation as Fred Jones in 1969 has watched other performers inherit the roles once played by his original castmates, eventually inherited Scooby himself and continued performing alongside later generations of Mystery Inc.
That history also makes Welker’s favorite episode an appropriate choice. “A Haunt of a Thousand Voices!” temporarily pulled back the curtain by turning the actors themselves into characters, allowing the voices normally hidden behind Mystery Inc. to become part of the story. For Welker, whose first animated role became a character he would still be playing nearly six decades later, few episodes could capture his unusual place in Scooby-Doo history quite as directly.