#6 Baron Von Raschke
Raschke was very much NOT from Germany but was billed there to generate heel heat. It's a good thing since when it came to technical wrestling he was not the most impressive by a long shot.
He was actually the thoroughly American James Donald Raschke, and his gimmick was all that kept his career going. Raschke was a large man, but not particularly athletic even though he had legitimate amateur wrestling chops.
His claw hold is rarely used today because it just looks silly, and Raschke's enormous success has little to do with his wrestling ability. Perhaps promoters were aware of his lack of ability because he never wore the 'big belt' of any wrestling company he worked for, though he did manage to win nearly thirty championships during his legendary career.
Why he was so successful anyway: Rashke is a good example of what happens when you create a compelling character. Then there's the fact that he was pushed as a monster heel, with many promotions 'censoring' his Iron Claw move because it was so 'gruesome'. The Baron shows what can be accomplished with just a little hype.