This image would be pretty obviously the work of Shirow Masamune (b. 1961) by style even if there weren’t attribution within the image itself. It is reblogged from a 16 January 2014 post at Infernal Wonders, and its origins on the Internet appear to go back to the now-defunct tumblr Random Forever Random, some of which is preserved in the Internet Archive.

Masamune has an official website here.