Ash what kind of airsoft do you play?!? One of those guys has a riot shield! (photo#5)
At the events I host we usually play head-to-head games like Capture the Flag, Team Deathmatch, Sniper Fallback, Run the Bomb, etc...
The pic of the guy with the riot shield was taken during a game of Escort the President.
The President is the guy with the yellow armbands. He is unarmed and his escorts have to get him from Point A to Point B within a certain time limit.
I bought both of those riot shields at a military surplus store for $20 each and they work great for protecting the President.
these guys remind me of Master Chief, C-EPO with guts, and some slasher guy.
I believe their masks are supposed to be like the masks worn by the protagonists in the game Army of Two. The copper colored mask was probably painted like that by the guy wearing it.