" We'll come back for Barklon later. We gotta get upstairs NOW." - Newton in Oil Slick.
Specialist Newton is a member of Delta Squad. In Oil Slick, he'll only appear if Barklon is killed (but not the bomb trap.) If Barklon is killed by the bomb trap, he will not appear. If Barklon is killed by the player or the enemy he will appear. He'll appear kick the door open. Then, he'll run up to another door and kick it but will be killed by the bomb trap.