I ate lunch with Greg and his then-friend Paul Gardiner (chief MuscleTech thief) when I was an editor at MuscleMag. At this time, mid-'90s, Kovacs was quite simply GIGANTIC. Hovering (bad choice of word, I guess) just under 400 pounds and reasonably hard (although also with an obscene protruding gut).
Believe me, I have stood in the company of the world's largest muscular men (Dillett, Yates, Kaz, Coleman, Francois, Levrone, etc.) and Greg, in the offseason, was the single largest I had seen and have yet to see. Ungodly.
Him, Sonbaty and myself worked out together once at a gym in Toronto and Nasser was a rock-solid 315 (he posed in the change room ... no homo). Kovacs dwarfed him in sheer bulk and overpowering size. We ate at a restaurant during that visit and the staff had to grab a VERY thick wooden bench from the entrance for the two to sit on during our meals. The regular chairs were neither strong enough nor big enough for each (when Kovacs tried sitting on one, it loudly "groaned" from the stress and was clearly about to break without even his full weight). That's when the bench was found and brought in.
As far as his infamous strength, well, he was nowhere near the strength (always just ludicrous, just like Muscletech's supplement efficacy claims) bantered about in all those idiotic MuscleTech ads, but he was a very powerful man, regardless. His drug use and monstrous bulk assured that.
I like Greg and know for a fact that he deserves a big cheque from Gardiner for one or two million for what he helped that company become. MuscleTech is founded on lies, greed and horseshit. In a strange way, Kovacs was the only "cool" thing about the company's beginnings.
He was a freak beyond freak.