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Arielle Lucila is the assassin at the centre of Andre Gonzalez's five-book action thriller series, which begins with Angel Assassin.

Amelia Doss is the title character of Andre Gonzalez's three-book horror series, which begins with Resurrection.

Adrian Mole is Sue Townsend's self-important, chronically candid fictional diarist.

Aector McAvoy is the Hull-based detective sergeant at the center of David Mark's police procedural series.

Alison Brownstone is the half-Drow bounty hunter at the center of Judith Berens's urban-fantasy series in the Oriceran Universe.

Alafair Tucker is the Oklahoma farm wife and amateur investigator in Donis Casey's historical mystery series.

Augusta Goodnight is the guardian angel in Mignon F. Ballard's seven-book Southern paranormal mystery series.

Andrew Yancy is a former Florida detective and restaurant inspector in Carl Hiaasen's Bad Monkey and Razor Girl.

Alex Delaware is the psychologist who consults on Los Angeles homicide cases in Jonathan Kellerman's mystery series.

Anna Pigeon is a National Park Service law-enforcement ranger in Nevada Barr's mystery series.

Armand Gamache is Louise Penny's Chief Inspector of Homicide, investigating murders in Quebec and the fictional village of Three Pines.

Ayla is the protagonist of Jean M. Auel's Earth's Children, a prehistoric historical-fiction series set in Ice Age Europe.

Amy Maxwell is the suburban-mother protagonist of Heather Balog's comic mystery series, whose titles count down from eight to two.

Alexander Sheridan is the British military officer at the center of V.A. Stuart's historical military novels about the 1857 Indian Mutiny.

Titus Artorius Justus is the Roman legionary at the centre of James Mace's Artorian Chronicles, serving through campaigns in Germania, Gaul, and Judea.

Abeni is the young heroine of P. Djeli Clark's middle-grade fantasy series Abeni's Song.

Alice is the curious child who enters Wonderland and the looking-glass world in Lewis Carroll's two classic fantasy novels.

Anita Sundstrom is the Malmö police inspector in Torquil MacLeod's Swedish crime series.

Alex Rogers is the displaced technology worker at the center of Charles W. Lamb's Ranger portal-fantasy series.

Aleytys is the telepathic protagonist of Jo Clayton's Diadem series, pursued after she becomes bonded to an alien artifact.

Arnold Ethon is the fifteen-year-old lead of A.P. Beswick's Spirit Beast Saga, drawn into the world of the Spirit Wardens and their bonded creatures.

Abby Sinclair is a Los Angeles security consultant in Michael Prescott's Abby Sinclair & Tess McCallum thrillers.

Abby Hart is the young woman at the center of Amy Cross's supernatural-horror Abby Hart Chronicles.

Angie Russo is the animal-talking amateur sleuth in Molly Fitz's Pet Whisperer P.I. cozy mystery series.

Annika Bengtzon is Liza Marklund's Stockholm crime reporter, whose investigations and private life run through an eleven-book Swedish crime series.

Adam Freeman is the newcomer at the center of Christopher Pike's middle-grade Spooksville horror series.

Amanda Pepper is a Philadelphia English teacher who investigates crimes in Gillian Roberts's fourteen-book mystery series.

Ainsley McGregor is the amateur sleuth in Candace Havens's small-town cozy mystery series.

Adam Lapid is the Holocaust-survivor private investigator in Jonathan Dunsky's historical mysteries set in early Israel.

Alison Bergeron is the English professor and accidental investigator in Maggie Barbieri's Murder 101 Mystery series.

Arnau of Valbona is the young knight in Simon Turney's Knights Templar series, bound by an oath to protect his murdered lord's daughter.

Angela McCluskey is the Irish immigrant at the centre of Anne Bennett's Birmingham-set McCluskey Saga.

Avery Baker is the textile designer turned renovator in Jennie Bentley's Do-It-Yourself Mysteries, set in Waterfield, Maine.

Annja Creed is the archaeologist at the centre of Alex Archer's Rogue Angel adventures, where a connection to Joan of Arc's sword brings her into supernatural cases.

Arwen Valondale is the healer at the centre of Kate Golden's Sacred Stones trilogy, whose choice to save her brother brings her to the Onyx Kingdom.

Arthur Dent is the unwilling human traveller in Douglas Adams's Hitchhiker's Guide to the Galaxy novels, beginning when Earth is demolished.

Alina Starkov is the Ravkan mapmaker whose power to summon light drives Leigh Bardugo's Shadow and Bone trilogy.

Alex Rider is Anthony Horowitz's teenage spy, recruited by MI6 for missions that exploit his age and skills.

Atticus O'Sullivan is the ancient druid at the center of Kevin Hearne's Iron Druid Chronicles, an urban fantasy series set largely in modern Tempe, Arizona.

Anita Blake is a necromancer, vampire executioner, and investigator in Laurell K. Hamilton's urban fantasy series.

Asher is the Hunter featured in Lara Adrian's Born of Darkness, the opening paranormal romance in the Hunter Legacy series.

Alexander 'Colt' Colton is the police lieutenant and male lead of For You, Kristen Ashley's first 'Burg novel.

Amos Decker is a former football player and investigator with hyperthymesia in David Baldacci's thriller series.

Aloysius X.L. Pendergast is the FBI agent at the center of Douglas Preston and Lincoln Child's long-running thriller series.