Ensign Ryson was a crewmember serving aboard the USS Voyager, under Captain Kathryn Janeway, when it was lost in the Delta Quadrant in 2371.

In 2375, Neelix had prepared a leg of Kelaran wildebeest for Ryson's birthday, however it ended up being the most recent "casuality" of the "Midnight Snacker", otherwise known as Seven of Nine. (VOY: "Infinite Regress")