Comic Book Artist: Frank Frazetta
Although Frank was more about a Illustrator than a penciler or a colorist, it's quite undeniable that he influenced whole generations of comic book artists. He just defined the main image of heroes as Conan, Tarzan, Vampirella and also created a whole fantasy universe, in a really unique and unbelievable way. Unfortunately, Frank died on 2010 of a stroke, but his legacy will go on with full strength as all his paintings.
You can get more informartion and images from this legend at this Website.