Origami enthusiasts have created a number of small foldable units that can then be assembled into all kinds of 3-D shapes, like this Darth Vader.
Arthur has a helpful description explaining the origins of the character:
You will learn how to make Darth Vader out of paper. Darth Vader is character from “Star wars”.
If you don’t know how to make the units used in the construction, here’s a tutorial on those:
You’ll need 467 black ones and 17 gray ones.