It’s as if he’s in complete control of the situation and of his own actions.
When people scream or they lash out, no matter how scary they might seem in that moment, there’s still a sense that they’re weak, that they’re out of control.
Regardless, I think we can all agree after watching the clip that Negan is one of the most terrifying characters ever, precisely because he’s so calm.
Negan looks like an unstoppable, calculated sociopath here, and he is going to loom over the series in a similar but completely different way than actor Jeffrey Dean Morgan did as a ghost on Grey’s Anatomy.