From head-to-toe, the only way this Teenage Mutant Ninja Turtles cosplay could have been any more authentic is if guimancreative had stacked on 30 pounds.
What I love is that it's not just an amazing costume (and example of props work, given the fact Krang himself lights up), it's brave. If I was going to cosplay as a TMNT character for Halloween, I'd have chickened out and gone for someone who at least wore some pants.