Reynolds is a corporal of the United States Marine Corps stationed on the Icarus Base. In 2009, during a surprise attack to the base, he along with other 80+ members of the base where forced to evacuate into the Ancient vessel Destiny.
He participated in exploration of an alien planet where he was attacked and, along with Lt. Tamara Johansen kidnapped by an alien creature. He woke up in the creatures lair with a broken leg. Eventually they were rescued by MSgt. Ronald Greer and Varro. (SGU: "The Hunt")