Piggy's real name is Peterkin (or at least just Peter).
Lord of the Flies is clearly based on The Coral Island in which the three main characters are Ralph, Jack and Peterkin. Lord of the Flies has no character named Peterkin but it does have Piggy whose real name is never revealed. In addition, Peterkin is depicted as the follower of the trio. Like the rest of the book, the character could be an intentional deconstruction of what it would really be like for him on a deserted island. As a bonus, both names start with P.
The island is Peter Pan's idea of a science project).
Only ever actually interfering by screwing with Simon's psyche with his magic. He'll tell the story of these boys to future generations of lost boys informing them how bad off they'd be without Peter's leadership.