Jervis was a villager from an unnamed planet in the Pegasus galaxy. He was a member of the village council along with Renni and Elson, the village leader. Unwilling to leave his home, he chose to betray the Balarian "outsiders". He armed himself and formed a mob that searched the village for Balarians. He gave a large group of them over to the Wraith and was subsequently jailed for his actions. When Beckett and McKay were captured, Sheppard accused him, but Jervis wasn't responsible. He also said he wouldn't have betrayed Beckett as Beckett was so good to them. He remained there until a visit from Elson, who led him to believe he had had a change of heart and freed him from his cell. Jervis then led a large group of Wraith from the Stargate to the nearby mines where he believed the remainder of the Balarians were hiding. Instead, he found a trap that had been laid by Elson and Sheppard's team. He, along with many Wraith and members of his village mob, died in the underground explosion triggered by John Sheppard. (SGA: "Outsiders")
Jervis is questioned by Sheppard about the disappearance of Rodney and Carson.