Main Characters:
* Griffin Bing: The protagonist, a resourceful and clever boy.
* Ben "The Machine" Watson: Griffin's best friend, a tech whiz.
* Amanda "Mandy" Tremont: Griffin's best friend and Ben's girlfriend, a gifted musician.
* "Uncle" Phil: A mysterious and powerful con artist who manipulates the others.
* Melvin "Mel" Klutz: A nerdy and clumsy boy who is initially exploited by Uncle Phil.
* Ms. Galloway: Griffin's supportive and understanding teacher.
Secondary Characters:
* The "Swindle" gang: This is a loosely organized group of con artists that Uncle Phil leads. Their names vary depending on their roles in the scams, and they are constantly changing.
* Mr. and Mrs. Bing: Griffin's parents, who are initially oblivious to Griffin's involvement in the scams.
* Mr. Tremont: Amanda's father, a wealthy and successful businessman.
* Mr. Watson: Ben's father, who is always supportive of his son's tech projects.
* The "Swindle" victims: These are the various people who are tricked by Uncle Phil and his gang, including the mayor, a television personality, and a wealthy businessman.
Important Note: Since the book is about a con game, the names of the secondary characters are often used as part of the scam and are not always consistent.
Let me know if you have any other questions.