Paradox is the main antagonist in Yu-Gi-Oh! 3D Bonds Beyond Time who is able to travel through time and space to change his destroyed future by Dueling Yuugi Mutou, Juudai Yuuki and Yusei Fudo.
He was one of mankind's last four survivors in an apocalyptic future, along with Z-one, Aporia and Bruno. Unlike his fellow survivors, not much of his backstory prior to meeting the other survivors is shown.