The series features the following seven main characters throughout its run: •
Paul Winchell as
Woofer, a bloodhound who would constantly accuse suspects without good reason, then later back-track while haughtily proclaiming his genius to satisfy his ego; he also wears a
deerstalkers' cap on his head. •
Jim MacGeorge as
Wimper, a more down-to-earth, easy-going, yet intelligent basset hound who would at times go along with Woofer’s schemes, and other times he would turn the tables on his comrade. • David Jolliffe as
Larry, the Club's eldest member and de-facto leader; he normally interviewed the suspect(s) and/or passed on their findings to Dottie. •
Patricia Stich as
Pepper, Dottie's blonde and beautiful elder sister. Pepper searched for clues and/or evidence, mostly accompanied by D.D., which often lead to them being chased by the villains. The sisters' last name was never revealed. •
Bob Hastings as
D.D., a bespectacled redhead wearing a Sherlock Holmes style hat, he often teamed up with Pepper to search for clues; it was never revealed what D.D.'s initials stood for. • Tara Talboy as
Dottie, the Club's youngest member, at 13 years old, she endured an arsenal of deprecating nicknames from her big sister Pepper and their friends: "half-pint", "short-stuff" and the like. A
prodigy, she normally stayed at home; from there, Dottie provided case-solving information from her
minicomputer and/or results from various
forensic tests. She also had access to high-tech communications equipment, including audio/video links to the Club's car and to their wristwatches, which doubled as
pagers. Dottie's friends were highly protective of her, and resented it when she joined them in the field...which the girl frequently did, after running out of "homework". •
John Stephenson as
Sheriff Lester Bagley, the local sheriff who frequently relied on the Clue Club for assistance and arrested suspects at their conclusion; story editor Sid Morse's series-bible revealed the Sheriff's full name. ==Episodes==