Chad is the main character in the book, besides his imaginary friend, Pingo.

He has short, light brown hair, blue eyes, light skin, a big nose, and big ears.

Together with Pingo, they fought ninjas, brewed magical potions, and floated in zero gravity. But as Chad grew older, his "real" friends began to tease him about having an imaginary friend, and one day Chad decided that he was too old for Pingo. From that day forward, Chad no longer had an imaginary friend. He had an imaginary enemy!