Resistance Sniper

This unidentified Insurrectionist Sniper first appeared in Planning the Heist, and later made a larger appearance in Spiral.

Battle on the Highway
The sniper was originally seen in a flash of a team of Insurrectionists walking down the highway in Planning the Heist. However, he was first seen in person when he was sent as part of a response team to recover the briefcase from Team A.

He shot Maine in the chest with his sniper rifle during the chase and nearly shot Carolina. However, York soon caught up to the truck he was on and rammed into it, sending the soldier off. Using his jetpack, however, the sniper was able to survive and get back into the fight. As he was flying to help his two allies, however, Maine punches him, causing him to hit a wall. Later, he is briefly seen on the passenger seat of a Warthog attempting to shoot down Tex, who passes by him on her motorcycle.

Longshore Shipyards
The sniper makes his return in Season 10: Episode 7 at the Longshore Shipyards, where he is seen killing a gull with his sniper and cheering about it with his fellow Insurrectionist soldiers. When the Freelancers attacked, he and other snipers were all killed inside of a Domed Energy Shield that North Dakota deployed. One of the snipers pulled out an SMG and shot the shield which repelled off the dome and hit the soldier. As he fell he was still holding onto the trigger which made the bullets bounce everywhere until the dome wore off where the insurrectionist moans and falls down.

Trivia

 * He appears to have a crosshair emblem on his chestplate.
 * When the sniper takes aim at Maine, the laser sighting is oddly shown coming from the scope of the rifle, despite no sniper rifle in the Halo series ever having been shown with such an attachment.