Mezer held the rank of Sergeant within the Corellian Security Force around the time of 40 ABY. He was the pilot of Silfinia and Najack Ell's shuttle, conveying them to the agreed-upon extraction point for the planned Confederation assembly on Gilatter VIII; he had no knowledge that the individuals known as the 'Ells' were actually Jacen Solo, who was secretly Sith Lady Lumiya.