Yusei Fudo is the main protagonist of Yu-Gi-Oh! 5D's, and was one of the Signers. He is known for and respected by many other characters in the show for his genius style of Dueling, his considerable skill, and his cool and clever personality. He uses a Duel Runner, which is called the Yusei Go. In the English dub, "Let's rev it up!" is a common catchphrase that he uses when he summons a Synchro Monster. He is also the foster brother of Jack Atlas and Crow Hogan, and very good friends with Kiryu Kyosuke, with whom Yusei has history.
He is a cool and collected duelist who believes no card is useless. He uses a "Warrior" and "Synchron" deck which focuses on managing small monsters of various levels in order to summon out powerful Synchro Monsters, such as Junk Warrior. His key card is Stardust Dragon and later obtains two further evolutions; the powerful Majestic Star Dragon and the Accel Synchro monster, Shooting Star Dragon.