Please note: This is in no particular order of appearance. I tend to love a vast majority of the fictional characters I come across so this is by no means a complete list.
James Bond (from Ian Fleming’s Bond series)
Carrot, Death, Vimes, and Moist Van Lipwig (from Terry Pratchett’s Discworld series)
Bilbo Baggins (from J. R. R. Tolkien’s The Hobbit)
Everett Hitch and Virgil Cole (from Robert B. Parker’s Cole/Hitch series)
Jack Aubrey and Stephen Maturin (from Patrick O’Brian’s Aubrey/Maturin series)
Conan the Barbarian and Solomon Kane (Robert E. Howard)
John Wayne Cleaver (from Dan Wells’ I Am Not a Serial Killer)
Serge A. Storms (from Tim Dorsey’s series)
Bertie Wooster and Reginald Jeeves (from P. G. Wodehouse’s Jeeves series)
Jaime Lannister and Tyrion Lannister (George R. R. Martin’s A Song of Ice and Fire)
Sherlock Holmes and John Watson (from Sir Arthur Conan Doyle’s works)
Dexter and Brian Morgan (from Jeff Lindsay’s Dexter series)
Roland Deschain (from Stephen King’s Dark Tower series)
Roarke (from J. D. Robb’s In Death series)
Jesse Stone (from Robert B. Parker’s series)
Mikael Blomkvist (from Steig Larsson’s Millenium trilogy)
Vlad, Henry, and Otis (from Heather Brewer’s Chronicles of Vladimir Todd)
Lestat, Louis, and Marius (from Anne Rice’s Vampire Chronicles)
Severus Snape, Neville Longbottom, and Remus Lupin (from J. K. Rowling’s Harry Potter series)
Snuffkin (from Tove Jansson’s Moomintroll books)
Hellboy and Abe (from Mike Mignola’s Hellboy series)
Harry Dresden (from Jim Butcher’s Dresden Files)
Hannibal Lecter (from Thomas Harris’ series)
Dr. Dolittle (from Hugh Lofting’s series)
Dustfinger (from Cornelia Funke’s Inkheart)
Patrick Kenzie (from Dennis Lehane’s Kenzie & Gennaro series)
Edward “Teddy” Daniels (from Dennis Lehane’s Shutter Island)
Mick Stranahan (from Carl Hiaasen’s Skin Tight)
Chemo (from Carl Hiaasen’s Skin Tight and Star Island)
Auden and Riley (from Robin Wasserman’s Skinned Trilogy)
Will, Brother Snail, and Shadlok (from Pat Walsh’s Crowfield Curse)
Ichigo Kurosaki and Zaraki Kenpachi (from Kubo Tite’s Bleach manga)
Naruto Uzumaki, Kakashi Hatake, Jiraiya, and Sai (from Mashashi Kisimoto’s Naruto manga)
Nico di Angelo and Tyson (from Rick Riordan’s Percy Jackson and the Olympians)
Hiccup Horrendous Haddock III (from Cressida Cowell’s How to Train Your Dragon series)
Logen, Inquisitor Glokta, Jezal dan Luthar, and Collem West (from Joe Abercrombie’s First Law series)
Christopher Carrion (from Clive Barker’s Abarat series)
Jean-Claude and Asher (from Laurell K. Hamilton’s Anita Blake series)
Takashi Natsume (from Yuki Midorikawa’s Natsume’s Book of Friends manga)
Nobody Owens and Silas (from Neil Gaiman’s The Graveyard Book)
Henry Whelp (from Robert Paul Weston’s Dust City)
Tane Cedar (from Jon Armstrong’s Yarn)
Eli Monpress, Gin, and Josef (from Rachel Aaron’s The Legend of Eli Monpress series)
Nigthcrawler, Wolverine, Magneto, Gambit, Captain America, Iron Man, Bruce Banner, Hank Pym, Daredevil, and the Punisher (from Marvel comics)
Kyle Rayner, Guy Gardner, Sinestro, Hawkman, and Ted Kord (Blue Beetle I) (from DC comics)
Bearclaw, Cutter, Dart, One-Eye, Pike, Redlance, Scouter, Skot, Skywise, Strongbow, Treestump, Two-Edge, Two-Spear, Tyldak, and Windkin (from Elfquest)
Ace, Crocodile, Luffy, Sanji, and Zoro (from Eiichiro Oda’s One Piece)
Exar Kun, Master Thon, Tott Doneeta, and Ulic Qel-Droma (from Star Wars: Tales of the Jedi)
Geronimo and Benjamin Stilton
Grand Admiral Thrawn (from Timothy Zahn’s Thrawn Trilogy)
Gingivere Greeneyes, Lord Brocktree, Martin, Matthias, and Mattimeo (from Brian Jacques’ Redwall series)
Skinner Sweet and Henry Preston (from Scott Snyder’s American Vampire)
Rin Okumura and Ryuji Suguro (Bon) (from Kazue Kato’s Blue Exorcist)
Kyo Usui, Sho Usui, Sagami, Hoki, Zenki, and Kensuke Dodoji (from Kanoko Sakurakoji’s Black Bird)
Spenser and Hawk (from Robert B. Parker’s Spenser series)
Warren and Kyle (from Patricia Briggs’ Mercy Thompson series)
Issac Dan der Grimnebulin (from China Mieville’s Perdido Street Station)
CSI: Librarian 