Faolon Wong is considered by many to be the most tragic character and evil dark wizard in the series.
Digimon Adventure 02
He was appears for "good behavior" and sought the Future Stone, which would allow him to change his future and ruled the world. But Davis, Veemon, Kari, Gatomon and Jonokyo knocked it out of his hand, which left them trapped in flooded points in dark future. Wong found out about their future portal travels and gets to flooded Hong Kong. But when Wong hitches a ride on the stone, he is dragged away by future versions of the Scubamon.