Phineas Flynn: Is a young boy in the Flynn-Fletcher family. He is the son of Linda Flynn and stepson of Lawrence Fletcher. He is one of the three children of the Flynn-Fletcher household, with a disapproving older sister Candace and a stepbrother, from Lawrence's side of the family, under the alias of Ferb. He shares a strong bond with the family pet, a platypus they named Perry, but remains unaware of his vague double life as a covert secret agent..