As a Sergeant during the Secession Wars, Jones was left without backup to take the most mineral-rich mining facility on Phobos. With his limited element, Jones seized the facility and was heralded a war hero.
His card on the Most Wanted board is the Jack of Hearts.
"Rion Jones" is also listed as a casualty on the stone monument containing the player-character's name at the end of the game. Jones is listed on the left-most column, furthest from Salt, who is saluting in front of the player-character's column.