Clark Smith

Clark Smith is the President of the Momentum Express company.

Biography
Clark meets Yusei Fudo, Sherry Leblanc and Bruno as their pretending to be employees from Bolger´s company. Thus at the time Sherry strangely asks him if they have met before, however Clark denies this. He then guides to where the riding course is located for the test of a new engine. Along the way, Clark shows them "Infinity" and explains what the machine does.

After Yusei and co. obtains the access key from his office to enter where Infinity is, Clark appears shortly but not before Sherry and Bruno sneak out, thus Yusei waits for Clark in there in order to stalk for time. To do so Yusei tells him that he wants to have a duel against him. To this Clark accepts, however he tells Yusei that some conditions will be used on their duel.

One is that they will be playing a "Concentration Duel" in which Clark explains the rules of the game. The other condition is that the winner also wins its opponents deck. Yusei who has no option accepts his condition. Thus the duel starts with Clark letting Yusei go first, letting him the advantage of beginning due to the unfamiliarity with the rules.

Clark however is cheating on the duel by remembering the placements of his cards and identify them through his glasses. Because of this he is able to send most of Yusei´s cards to the graveyard. Still Yusei is able to see his through his trick and ultimately wins the duel.

Clark not only admits defeat but also reveals that he knows who Yusei is from the beginning. Clark activates the alarm and Yusei flees to meet with his friends, however as there escaping from the company´s security they enter a shuttle which actually turns to be a trap set by Clark. As he plans to use it to send them through a wormhole created by Infinity.

Deck
Clark uses a Geometric Knight Deck.