Who is the characters of Phineas l. mcguire erupts?

In "Phineas L. MacGuire Erupts," the main character is Phineas L. MacGuire, a curious and inventive fifth grader with a passion for science. He often finds himself in humorous situations as he navigates school and friendships while trying to impress his classmates with his scientific projects. The story also features his friends, including his best friend, who support his endeavors and help him tackle challenges. The narrative highlights themes of creativity, perseverance, and the importance of friendship.