Shendu is the demon sorcerer of fire in the form of a humanoid dragon who hailed from a family consisting of himself as well as seven siblings and his own son Drago. Although Jackie Chan Adventures has no sole underlying main villain for the whole series, Shendu is arguably the most prominent villain and best candidate for the role of a main antagonist, due to his role in the events of the first and second seasons, his revival at the end of the third and the rise of Drago in the fifth, and the occurrence of the events in the fourth season owed in part to the events of the previous seasons and his use of one of the tribes of the Shadowkhan (not to mention a brief cameo in the episode in which his son was introduced). He was only using one of the Oni Mask to summon the Shadowkhan.