Ironically the one thing about Negan that they've had to tone down from the comics is his language. That guy swears like a monster trucker.
I think I'm almost a little disappointed with the TV Negan. Mostly for this reason.
And it's not like US TV isn't shy of swearing. I watched 4 eps of Vice Principles last night and the language is shocking

Negan has some great lines in the comics. Hopefully TV Negan gets a few good ones. There were a few but not enough.
TV Negan is also a bit smaller than comic Negan. The actor looks smaller than when he was in Boardwalk Empire but might just be the clothes. He's in AntMan as well.