If you want to see how it was made, Dan and his friend Krystal (who helped build it) made a time-lapse video detailing the construction process, which you can check out here.
ChozoBoy [DeviantArt]
In Real Life
3.3-Metre Metroid Cosplay Is A Towering Work Of Art
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...is that even a cosplay? It looks more like a giant prop. Can't seem to see anyone hiding behind there wearing it at all. Didn't watch the video though, as it doesn't seem to be working.
Metroid FTW!