David Rabb (デイビッド・ラブ, Deibiddo Rabu) is a Duelist from the United States and companion of Zane Truesdale who he follows to Duel Academy. After arriving at Duel Academy along with Zane and Reggie MacKenzie, David participates in the tournament hosted by Duel Academy, easily trouncing Syrus Truesdale. He later crosses paths with Jaden Yuki, but decides not to Duel him because of his Slifer Red status as the defeat of a Slifer Red will get him a meager amount of points compared to Ra Yellow and Obelisk Blue students. Because he is fluent in both English and Japanese, he is able to converse with the other characters. In addition, at some point before coming to Duel Academy, David was beaten in a Duel by Atticus Rhodes, further motivating him to defeat Alexis Rhodes in a single turn during the tournament. David is defeated by Chazz Princeton, whose final attack shatters the earring and releases David from Tragoedia's control. James Crocodile Cook later reveals that he had been rivals with Rabb when they both in America, and Jim seeks out Atticus as the latter was able to defeat Rabb before he did.
He served Tragoedia, and sought Duel Spirits on its behalf.
David's name appears to be a play on the character Captain Harmon "Harm" Rabb, Jr. from the American television show JAG (Judge Advocate General), especially with Rabb and MacKenzie's military uniforms.