Jack is a hot-tempered, stubborn, and narcissistic freestyle boxer whom everyone fears. He is 198 cm tall, weighs 59 kg, has an athletic build, soft dark hair, fair skin, a straight nose, and Asian features. He possesses a great deal of charisma that attracts people of all races, and when he speaks, they are captivated by his good looks and charisma. Jack is also sexually attractive and has a boyish inclination.