all time? that's tuff...
My vote is Paul Dillett.
Ronnie
JP Fux in the 90's
Nasser in the 90's
Ruhl
Vic Richards
even marko salovikian (or however u spell it)
put Tom prince in there as well...
I suppose dorian should be in there as well.
but when I think "mass monster", I think of guys that went 320+ offseason (JP, Nasser, Ruhl, Dillett)... not sure dorian ever went that heavy, and I don't think marko did.
but they're all tall... now you have guys that are 5'9" that are 290+ offseason .... guys much shorter and carry a lot more weight vs. height (Jose Raymond, Kevin English, kai greene, ect...).... it's a different era these days... and guys going up to 320 isn't all that special anymore (or common, seems a lot more guys stay at a lower bodyweight now-days).