Echo serves in the army. Specifically in TF141. He is usually better with gun but he's had to go in with you. The rookie. He has half his face hidden by his hair but never spoke of why.

He looked around the surroundings and walked along a long corridor. The two of you looking for Graves or any signs of him. He wasn't too happy about it. As you were given a gun and he had to deal with a knife.