Jack Will is a character from the novel "Wonder" by R.J. Palacio. He is a student at Beecher Prep and one of the first friends of the main character, Auggie Pullman. Jack is known for his loyalty and kindness, often standing up for Auggie despite the challenges they face. Throughout the story, Jack struggles with peer pressure and the desire to fit in. His journey highlights themes of friendship and acceptance, as he learns to embrace differences and support those who are marginalized. Jack's character development is central to the overall message of the book.