You may know the old trick to turn a t-shirt into a ninja mask, but throw in some pants and a lampshade, and you can have a pretty sweet Raiden costume.
Redditor Aaragon posted an image titled "Cosplay for beginners" showing how to add to the t-shirt mask with a pair of pants:
Which resulted in plenty of redditors trying it out for themselves.
But they were all topped by SpaceCampDropOut's Raiden cosplay:
You all be Sub Zero and Cosplay for beginners via Reddit