I guess most of you know of Frank Frazetta's work. His draughtsmanship (as well as painting) is extraordinary. He became known as the world's best illustrator for the fantasy/science fiction genre.
Copied by many, but no other artist has came close to this level of expertise.
The depiction of his women and men are sexually charged figures within various storytelling themes.
Bodybuilders and pin up girls. His animals and monsters are strong and muscular as well.
Frazetta goes for maximum dramatic effect in his composition to dazzle the viewers.
There is a sense of ease in his line work. I particularly like his loose drawings. Marvelous doodles that continue to inspire today's animators and illustrators.
I would call him a modern Heinrich Kley.