I grew up in the Tyson era so I remember all of the media appearances he made. That guy has said and done some intimidating shit.
I'd have to say Tyson. Haven't seen much of Liston I'll admit, but just looking at photos of the guy I really don't see it.
george foreman he was way bigger than tyson and hit harder even in his 40's
Iron Mike for sure. I have a hard time giving the best grill salesman of all time the number 1 spot even if he was a beast in his prime.
The second half of that statement is pure speculation.