List of The 39 Clues characters
Amy and Dan Cahill (both from Boston,who are kids that took up the quest). Nellie Gomez (Also from Massachusetts) serves as their au pair and supervisor. They are the protagonists of the franchise. Amy is fourteen years old while Dan is eleven. Both of them have jade eyes. Amy is shown to be intelligent and analytical, while Dan is more active, with a photographic memory. Amy, however, is agoraphobic and pyrophobic,; while Dan has asthma and is claustrophobic. They were both wards of Beatrice Cahill since the death of their parents Hope Cahill and Arthur Trent. Throughout the hunt, Amy, and Dan provided the least power to search for the Clues. Surprisingly, they have collected as many Clues as everyone in the hunt, with the help of Nellie Gomez . In the end, Amy and Dan reunite the Cahill family altogether, bringing peace to every Cahill who worked almost 500 years for finding the 39 Clues. Following the events of Into The Gauntlet, and after making peace with Ian and Natalie Kabra, Hamilton Holt, Alistair Oh, Sinead Starling and Jonah Wizard, Amy is named their grandmother Grace's successor and head of the family. They are now in custody of Nellie Gomez and Fiske Cahill. Their branch is revealed late in the series to be Madrigals; the secret fifth branch descended from Madeleine Cahill. Amy's official card is No. 18 while Dan's is No. 2.
List of Blue's Clues characters
Steve is the host for the show's first four seasons. He is Blue's owner and caregiver. He wears a distinctive green-striped shirt and loves anything that has a similar pattern. He is clever and sympathetic but sometimes forgetful. He is always excited to play Blue's Clues, but can almost never find clues himself and relies on the viewer to help locate them. Whenever he finds a clue, he draws it in a pocket-sized pad of paper called the Handy Dandy Notebook. When he finishes a game of Blue's Clues, he sits in a giant red armchair called the Thinking Chair and comes up with possible solutions to Blue's puzzle. His favorite time of the day is mailtime, when he receives a letter from Mailbox. He owns a stuffed anteater named Horace. At the end of the fourth season, Steve leaves for college on a hopscotch scholarship and leaves his younger brother, Joe, to care for his house and Blue. He is played by Steve Burns.