The Brothers Brick:

The Marvel exclusive minifigure for San Diego Comic-Con 2018 has been revealed to be Deadpool, disguised as a sheriff sporting a mustache and a tan Cowboy hat, which is a new part released with the recent Minifigure Collectible Series 18 Cowboy Costume Guy. It follows up last year’s Comic-Con exclusive Deadpool Duck minifigure.

I literally have no idea if this has ever been a storyline thing for Deadpool.

But damn, that mustache is exquisite!