Jack is a large, green-scaled bipedal dragon (taller than Drum ). His hands have four fingers each, with one to two digits per finger. He wears a helmet equipped with a sword that is able to slide forward when needed. He also dons pauldrons and somewhat little body armor. Jack has a strong desire to protect others and is often eager in battle. Despite being well known and considered strong, he doesn't seem to be arrogant or overconfident in battle.Jack has usually a serious and calm personality,