Riley Brody is Jason Brody's 21 years old brother and is the youngest of the three brothers. Right before their Rook Island adventures he received his pilot's license. He was captured in Rook Island alongside his brothers and friends by Vaas's men. Jason had thought Riley was already killed by Hoyt and wanted nothing more than to kill Hoyt personally. Jason eventually found Riley still alive in Hoyt's compound badly tortured by Hoyt's men. Before Jason finally killed Hoyt, he told Jason that Riley was sold to a slaver in Yemen and that the plane taking Riley there was leaving soon. Jason raced towards the air strip killing privateer after privateer. He eventually found his brother and they both escaped via helicopter.

The in-game description for Riley reads like this: "Your little brother Riley. Bet you miss him, huh? That's your weakness. Don't let it get to you. I may miss my country, but I'm not losing my mind climbing up a skyscraper, or riding whales bareback. Stay focused."