This is a great submission by one of our members. It's a little complicated, so I'll try to decipher it as much as I can, haha! The character (Boxers) and line-art are by  antihero. The coloring and background are by our member  jrwenzel. Thank you for allowing this to be submitted!

Here's the description from the original submission:

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REPOST - Sorry!
Mouse hiccupped and deleted the original post.
A bit of coloring and background I did.

Pictured is Boxers; character and line art by  antihero.

Initial reference is "here"
A cropping showing greater detail is "here"

Please direct any comments/questions regarding the original work to AntiHero.
It's AntiHero's art, I just added some color and a background to it.
[Shown Full Viewed at ~32% actual resolution]

Character and lineart © AntiHero
Color and background ©John R Wenzel
Colored and posted with permission of AntiHero.

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Character/Lineart ©
Color/Background ©