Corporal Russo is a NERO operative heard in a recording from the Spruce Lake NERO Checkpoint in the Highway 97 region. He hides out with Martine Sinclair when the Militia hits the checkpoint.
Cooper
Cooper is a NERO researcher and a friend of O'Brian. His team goes into a cave in the Highway 97 region to sample a mutant Freaker and stops answering the radio. O'Brian sends Deacon in to find them.
Joany Gray
Joany Gray was Boozer's wife, his high school sweetheart and a friend of the Mongrels. She died in a crash years before the outbreak. Boozer still carries the loss, and she comes up often in his talks with Deacon.
Martine Sinclair
Lieutenant Martine Sinclair is a NERO agent you only hear in recordings. Her voice turns up in several Inspector Field Notes and a mobile medical unit recording. Early in the outbreak she oversaw corpse disposal sites in the Highway 97 region.
Melinda Foster
Sergeant Melinda Foster is a Militia soldier from Wizard Island who runs supply and scouting missions for Colonel Garret. Marauders take her captive on Highway 97, and Deacon rescues her in Still Breathing.