Hunter: You really do not want to make me angry.
Crosshair: Really. Believe me, you don't.
Wrecker: Please just surrender or let one of us punch you before you meet somebody you don't want to.
Tech: Someone who usually leaves a trail of blood we do not have the time to clean up right now. Also, I am out of rabies shots.
Bad Guy: You...You'd have to give me a rabies shot?
Tech: Of course not. You'll be dead -- the rabies shot is for Hunter.
Wrecker: We thought he got it one time from biting a Weequay.
Crosshair: Turns out, he was just foaming at the mouth because the Weequay tasted so bad.
Crosshair: So can you please just fall down or something? We can only hold him back for so long.
In the four episodes we got of the Batcher in TCW, we see Hunter growl and grunt at people (primarily Rex for some reason) as a kind of attempt at communication, he SNIFFS DIRT to track things, and he honestly kind of goes crazy with his knives in the fight scenes. I think this confirms or at least indicates that in his young gun, wild thing, commando TCW era Hunter was feral, or at least semi-feral.
What I'm saying is that I love feral Hunter. And if I must write the feral Hunter content I want, so be it -- but you cannot convince me this man did not go absolutely batcrap insane on a few bad guys early on in his deployment. I'm sure Cody had to preface a few conversations with "Hey, I know I recommended these guys but...just keep an eye on the shaggy one, y'know? No sudden movements or blinking red lights or...you know what, treat him like a pissed off Cane Corso while you're in combat. If you're on downtime, treat him like a not pissed Cane Corso, and make sure his handlers give permission before you try to be friends."
Rex doesn't get this memo because Cody thought it would be funny to let him figure it out on his own, which takes about five days and a few near-death experiences.
When Echo joins the Batch he figured it out in about two hours because someone said something mean about his prosthetics. The next thing he knew, Tech and Wrecker were appealing to Hunter's better nature and Crosshair was reminding the sergeant not to use his teeth as a murder weapon this time because "That's what knives are for."