Fenech is a bit like Pryor in this regard imo, it's aggression that was all about setting the pace with them.
Names on the stat are from the top of the head and not in particular order. New names and opinions about "who was the most agrressive boxer ever" are welcome
I would probably say Tyson. Tyson was coming to kill you. Frazier was too, but not immediatly. Like Teeto has said, it's about keeping the pressure on, keeping the tempo high, keeping on the man's chest. The mission is to do the work in a certain way that happens to be very aggressive. Second career Mike was just an insane aggressive ******* who comes to kill. That's more aggressive, or at least more purely aggressive if you get me.
That's the point, Tyson was starting with that killer in his eyes, but was slowing down in later rounds. Frazier was considered a slow starter, but when he started for good he was vicious...I would pick Frazier
It's different interpretations, if you take the literal meaning of the word then maybe it's Tyson, like McGran said, because he was likely the more aggressive person of the two and had them mean intentions that showed in the ring stylistically, pure ferocity in all of his combos. But Frazier would be the man that i would say kep the sustained pressure and was tighter to his man over the stretch of the bout so it may be him in that regard.
That's why this is intriguing - Tyson was natural aggressor, vicious and mean man, and we all could see that in the ring. Frazier was known as a "good man" outside the ring, and his aggression behind the ropes was so much differrent than Tysons. But i rate higher that high pace aggresion of Smokin' Joe, cuz he could do that for 15 rounds, taking opponets air and breaking them down with that aggression.
Your avatar's just reminded me who is one of the worst guys to be in the ring with if he's pissed off