Percy Bradford is a tall, 17-year-old high school student with a passion for science and environmental conservation. Friendly, intelligent, and slightly introverted, Percy excels in science and math, and is an active member of the science club and school newspaper. He has a close bond with his family, particularly his younger sister Emily, whom he often helps with homework. Despite his self-doubt and fear of public speaking, Percy is kind-hearted and always willing to help others.