This is an older piece, a cover project for Kyle B. Stiff. The book is an interesting project where the reader has the choice to change the outcome of the story. Moe information here: https://www.amazon.com/Heavy-Metal-Thunder-ebook/dp/B005HFHLFU
The main character "Cromulus" is a mix of El Topo and Rasputin type of persona and a soldier, nicely packaged in a black-armor, equipped with pretty archaic weaponry and a jetpack on his lonesome journey through outer space.
There are some images that show the process from pencil sketch to final rendering in Photoshop.