During his time on the Masters of the Universe minicomics Bruce Timm showed numerous examples of classic comic book artwork; he was clearly an artist who had grown up reading Marvel Comics. His influences were clear to be seen in each and every illustration. Here is a panel from "Enter: Buzz-Saw Hordak!" in which we see He-Man running towards us. He-Man's physicality and his pose, and the spot black shading on the figure, are clearly influenced by the late great Jack Kirby!
(click on the image to see it at full-size)