This unknown cosplayer is dressed as a hat worn by Jayne Cobb, a character on the TV show Firefly.

Oh, He robbed from the rich
and he gave to the poor.
Stood up to the man
and he gave him what for.
Our love for him now
ain't hard to explain.
The hero of Canton
the man they call Jayne.

via Great White Snark | Image: Fox

Previously: If Firefly Had Been Made in the 80s