In my lifetime, I'd have to say Mike Tyson at the age of 17-21ish. I've never seen any boxer since then that won so many fights before the first bell rang. I don't know enough about classic boxing to guess who was the most intimidating boxer ever, but Foreman always struck me as genuinely terrifying and Jack Johnson looked like he would have given most of his opponents the squits.
1. - Foreman. Had that bulldozer look & usually backed it up in the ring (save for 1-2 hiccups) Anybody seen that pic of him training carrying a dead cow?? What a legend! (Cow was more like a calf but i wont argue) lol 2. Tyson. From 1986-1990 he ha to be the most feared individual to step into a boxing ring, a fast & powerful HW who had a shitload of KO-1s to his resume, plus a manslaughter stare & physique Thats just my opinion......