The Aurora Guard was a member of the security personnel serving aboard the Aurora during its last mission.
He was placed in a Stasis pod and when the ship was found by the Wraith who put the Lanteans on board into a virtual reality he continued to serve as a guard believing it to still be a time during the Lantean-Wraith war. He assigned to guard Lt. Colonel John Sheppard but he was knocked out and Sheppard escaped. He, along with all the others on board were killed when the self-destruct destroyed the ship. (SGA: "Aurora")