Fūshin Paradox

Fūshin Paradox (富士パラドックス) is the legendary scientist who is able to travel through time and space, killed by Momoshiki Palpatine's apprentice; Dr. Eggman alongside Roman and Rex, and was the victim to the Zero Reverse prior to Mega Man ZX Shippuden series and before the rise of Eggman's Sith Empire.

Grand Civil War
At the end of the Grand Civil War, when he was young, Fūshin Paradox loves Duel Monsters, and he admires the creator of Duel Monsters, Maximillion Pegasus. If the popularity of Duel Monsters, it would have the successors of Duel Monsters to inspire the following generations to pursue even greater achievements, such as New Domino City, Turbo Duels and Ener-D. Fūshin Paradox became a scientist who helps Dr._Fudo which would result in the offspring had by the couples, as an example. Paradox was fully aware of this consequence, believing that the chakra would be used by many great evils that threatened the world (Yami Marik (original arc), the Great Leviathan (Waking the Dragons), Zorc (Last season of the original anime), the Shadow Riders (GX first arc), the Light of Destruction (GX second arc), Nightshroud (GX final arc), the Dark Signers (5Ds first arc), etc (other 5Ds arcs, ZEXAL and Arc V)) used Duel Monsters in their attempt to destroy it.

Professor Fudo wanted to cancel the Ener-D research, as he already suspected that its rotation was quite unstable. Furthermore, he realized that there might be an accident. However, its proposed cancellation was rejected by the City, which caused Professor Fudo to be removed from the project and replaced by Roman instead and Momoshiki Palpatine sent Dr. Eggman take Fūshin Paradox hostage.

Soon after, not only Roman overrode the system, Dr. Eggman allowed Rex to use the fully constructed Death Egg to fire the Ener-D laser on the which lead to the Zero Reverse incident. Dr. Fudo's last act was to save his infant son, Yusei, by ordering Fūshin to eject him from the Ener-D development area in an escape capsule immediately before he and Fūshin were killed by the negative energy explosion.

Abilities
Fūshin Paradox possesses a Duel Runner that was built by Dr._Fudo himself. The Duel Runner is shown to travel through time and change between modes. Like Yusei's Duel Runner, Paradox possesses a hybrid model before his death. Duel Runner operates much like other Duel Runners, allowing him to activate Turbo Duels. It is in this form that his Duel Runner shows the ability to travel through time and space. When Fūshin Paradox's spirit emerge, Paradox has also demonstrated the ability to let Paul von Schroeder to create the successors of Duel Monsters including the Star Slayer Monsters, he activates a flight mode for his Duel Runner, allowing him to communicate with Girouette who was aware of Eggman's Sith Empire. He is capable of creating Star Slayer Monsters and it's summoning cards.
 * -|"Ground Mode"=
 * -|"Flight Mode"=