Chain Guy and Chain Girl

The Twin Insurrectionist Turret Soldiers first appear in Season 10: Episode 7, with one seen painting their turret during the Chairman's message. They both made a more prominent appearance in Season 10: Episode 9, where they are seen using their turrets to suppress the incoming Freelancer Agents who were trying to enter the Insurrectionist bunker.

Role in Plot
After the Insurrectionist Elite takes down the Unidentified Blue Soldier, he asks these two soldiers to stand their ground and prevent any other intrusion. Soon after, sniper rounds from Wyoming disorients the two, but they immediately recover and prevent him from making any progress.

Washington, Carolina, and York soon join him, with Carolina commanding him to move up. Wyoming refuses, believing that he would be killed by the Turret Soldiers. Then, a cloaked Tex rushes in to take on the Turret Soldiers, only to be followed by Carolina after ordering the rest of the Freelancers to provide covering fire.

Trivia

 * Similar to the Insurrectionist Flame Soldier (and some of the other Insurrectionists), the Turret Soldiers' armor (most noticably their visors) and weapons have emblems. In their case, one of the soldiers has a Frowny Face, and one has a Smiley Face.
 * An eerie carnival-like music is played when they first appear. Added to their emblems and intimidating looks, they are implied to have sub-optimal mental health.
 * Both soldiers have a phrase written on their Turret Guards. Frowny Face's has "Turn That Frown Upside Down", while Smiley Face's says "Have A Nice Day Or Else".
 * Smiler Face appears to only communicate in giggles, while Frowney Face communicates by weeping.