Ninja Jay is a brave and energetic hero from the Village of Reverse. Alongside his sister, Ninja El, he is a keeper of the "Ninja Reverse Scroll". While Jay is fast and skilled, his greatest challenge was learning that the power to reverse time is not a way to escape mistakes.

Through his adventures, Jay discovers that true strength lies in honesty. He learns that telling the truth and not running away is the right thing to do, which empowers him to take full responsibility for his actions. Now, he uses the Reverse Scroll only when necessary, knowing that the best way to change the future is to be brave in the present.