The Hunter

One of his legs is blown off by Jane Doe and is replaced with a metal peg leg, making his steps very loud and audible

Of the Christian Brutal Sniper. Both were former RED Snipers who, after an altercation involving a BLU Spy, wind up dying a horrible death, resurrect, and start wearing all-black. Though in contrast with the CBS, who is a master in hand-to-hand combat, the Hunter is seen exclusively using ranged weapons and is admittedly pretty bad at doing so. And, of course, the most notable similarity is their taste in hats, both donning a Holy Hunter.

Before Doe ends him for good, The Hunter admits that he's been waiting for this to happen.

He makes it clear that this is how he feels about being brought back by the Respawn Machine, and it's easy to see why.

He's lost one leg, but like the rest of the Slaughterhouse mercenaries, he's a very real threat, making up for his lack of mobility with his sniper rifle and rocket launcher.

Despite being a professional marksman, he misses every shot except one that hits Jane's leg, and even that one is non-fatal. While never outright said, it can be inferred that his resurrection and subsequent loss of sanity have had a seriously negative impact on his aiming skills.

He is a delusional psychopath, but when compared to his other teammates in the Slaughterhouse, he's far more lucid and mentally intact. Too lucid for his own good. As it is implied that most mercs don't have memories about the phase before they respawn or have dreams about it at worst, his audiotape makes it clear that he's fully conscious during the process. "I've seen the other side. It's longer than you think."

While Archibald's kidnapping turned out to be fake, the Hunter would love nothing more than to kill the fat bastard himself.

His mouth is permanently locked in a pained-looking rictus grin.

While he is murderously insane, the Hunter isn't exactly wrong when he asks Doe if he's willing to risk his life for a corrupt bastard like Jules Archibald. Doe has no response, having already found a photo of Archibald executing a previous clone of himself or possibly even the original Doe.