Among the regular characters you're likely to meet in your visit to the Adventurers Club are...
Club Officers
- Pamelia Perkins, Club President.
- Otis T. Wren, Club Treasurer and Ichthyologist Extraordinaire.
- Fletcher Hodges, Club Curator.
- Samantha Sterling, Club Jungle Exploress (modeled after Amelia Earhardt).
- Hathaway Browne, Club Aviator (and ladies man).
Other Humans
- Emil Bleehall, a traveling Junior Adventurer from Sandusky, Ohio (tribe 602), that has come to compete for the Balderdash Cup
- Graves, the club's Butler.
- The French Maid, the club's Domestic Engineer.
- Madame Vidalia Onionski Zarkoff, the rarely-seen club gypsy.
- Mandora, The Predecessor of Samantha Sterling. She's a world renowned scientist and cabaret performer.
- Sutter Beswick, is another character who is supposed to be a competitor for the 1937 Balderdash Cup. Although, he too is unable to attend due to Otis' exploits. Sutter is also a past winner of the Balderdash Cup for 1930. He made his first and final appearance on the final night of the Club.
Never Seen Members
- Chilton Thompson, mentioned in the Balderdash Cup and the Radio Broadcast, is a never seen character that is supposed to be the sound effects man for the Radio Broadcast (but never shows up). He is also a past competitor for the Balderdash Cup, but, due to Otis Wren's doing, is unable to attend for 1937.
- Sheila Griffin, a never seen character, is supposed to be playing the role of Gretta in New Years Eve episode of "Tales of the Adventurers Club," but, for some unknown reason, does not show up to the Radio Broadcast.
- Merriweather Adam Pleasure, the founder of Pleasure Island and the Adventurers Club.
- Merriam Pleasure, wife of Merriwather and winner of the 1927 Balderdash Cup.
- Dr. Fielding Ratzkywatzky, Member Emeritus.
- Maj. General C.K. "Bob" Waggleberry, Member Emeritus.
- Richmond Linedozer, Member Emeritus.
- Pygmalia "Piggy" Venables, Member Emeritus.
- B.W. "Icicle Ike" Jakookie, Member Emeritus.
- Kennington Schnabel, Member Emeritus.
- Sir Langston Dithers, Member Emeritus.
- Lowell Battbarton, Member Emeritus.
- Emil Bleehall, Member Emeritus and uncle to the winner of the 1937 Balderdash Cup.
- McDabbler Twelvetrees, Member.
- Alvin W. Chowderflute, Member.
- Sir Reginald Phyffe-Hardwicke, Member.
- Linus Van Ackerman, Member.
- Mumford L. Gertz, Member.
- Clyde McBeeBee, Member.
- Dr. Geoffrey T. Spaulding, Member.
- Noah X. Malmborg, Member.
- Embrey Z. Harumphinger, Member.
- Julie Harbert-Harman, Member.
- Bascombe H. Potter III, Member.
- Hardwick "Bugsy" Van Loon, Member.
- Cowley W. Frink, Member.
- Burlwood Carruthers Jr., Member.
- Chester Babbit Rawlinson, Member.
- Florence Arrot, Member.
- Tarleton Feldspar, Member.
- Coombs "Lucky" Lupree, Member.
- Erwin "Pops" Einbinder, Member.
- Davila Willoughby, Member.
- Pieter Hoots, Member and the tenor in the Adventurers Club choir. He is referenced when Tiny Otis sings "The Three Little Fishies."
- S.R. "Bob" Bobenmeyer, Member Owing Dues.
- Knute "Big Swede" Belasco, Member Owing Dues.
- Rev. Charles A. "Tick" Bitterford, Member Owing Dues.
- Eben Cockley, Member Owing Dues.
Not Quite Humans
- Fingers Zambezi, the spirit of the club's organ.
- Colonel Critchlow Suchbench, always on duty near the entrance to the Library.
- Babylonia, the great stone goddess.
- Yakoose, the yak-moose that is mounted but not quite sedated.
- Beezle, the disembodied genie head in the Treasure Room.
- Arnie and Claude, the most vocal residents of the Mask Room.
- Slappy, a crude red-headed doll that randomly appears around the club, usually with the Colonel.
- Marcel, gorilla who made appearances in the club only for the first year or two. Reappeared, "filthy rich" at the final Hoopla.
- Plaid Monkey, appeared at the club from mid-2004 to beginning of 2005.
The characters are portrayed by a talented group of cast members, who often portray more than one character in the Club.