To help give their Mass Effect cosplay a little more professional edge, the team at Crabcat Industries commissioned master craftsman Neil Tambini to make this Garrus mask. It's terrifying. In an awesome way.
Not only did Tambini (who helped design many of the monsters for the Jurassic Park ride at Universal Studios) get the vigilante's face right, he got the blown up parts of his face right, leaving us with a mask that looks more like a fancy bust (or stuffed head) than something that's made to be worn.
The team at Crabcat are about as dedicated a bunch of cosplayers as you can get: to see more of their great stuff, check out this gallery of Dragon Age and Mass Effect costumes.