Han Seoul-Oh is an aloof former gang member and street racer, a supporting character to Dominic Toretto in both Fast & Furious and Fast Five, and to Sean Boswell in The Fast and the Furious: Tokyo Drift. He is the only character from Tokyo Drift to appear in the subsequent films to date.

Chronologically, in Fast & Furious he steals fuel tankers with Dominic, while in Fast Five he joins Dom and Brian's heist team as a precision driver and a "chameleon". While planning the heist in Fast Five, Gisele Yashar, who attributes Han's constant need to occupy his hands to him being a former smoker. After the heist, Han and Gisele start a relationship and travel together through Europe, starting with Berlin. They assist Dom in his crew against Owen.

In Tokyo Drift, Han hires Sean Boswell as a delivery driver and teaches him how to race against Takashi. He dies during a climatic getaway, when a white Mercedes crashes into his car. In the post-credits scene of Fast & Furious 6, Ian Shaw is revealed to have driven the Mercedes after tracking the street racers on a police radio.

Han is portrayed by Sung Kang.