Thanos, the main villain of this year's Avengers: Infinity War, became a surprise sex symbol of sorts setting the internet on fire with his CGI-formed thicc musculature and rugged good looks.

Early concept art featured in the art book Marvel's Avengers: Infinity War - The Art of the Movie has leaked on Reddit showing alternate designs for the Mad Titan showing off a topless, leather-clad version of the MCU villain with one commenter on Facebook noting that Thanos had "found the Swole Stone".

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The early designs show more pronounced muscles and additional ritualistic scarring on Thanos' body, similar to markings on Drax and Gamora's bodies. Another design has the villain in a sleeveless black vest resembling an extraterrestrial biker. While Thanos did ultimately wear a sleeveless outfit in the final film, it featured the more familiar gold and purple color scheme straight from the comic book source material.

Whether Thanos adopts one of these earlier designs in next year's untitled Avengers sequel has yet to be seen but the concept art does offer a more casual look at the Mad Titan.

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In the meantime, Marvel's Avengers: Infinity War - The Art of the Movie is out everywhere on November 6 while the film is out on home video now.