We adjusted the previous stickers designs that were a little complicated to find the right paper , then print, then cut precisely and then stick on the robot parts was a good result at the beginning but with time the labels just fall off.
So to make it easier for all Otto builders we just redesign for paper craft with inspiration from http://cubeecraft.com to just resize, print, fold and suit Ottos with multiple creative characters.
We started adjusting our current graphics paper craft art by Gus Santome Mini PapercraftAvengers but the possibilities and number of characters are endless thanks to websites like cubecraft or cubefold-craft.com which let you download the designs fro FREE to use as long as you don't make a businesses out of it, so exactly like them an making honor to our super truly open source hardware we also share them for FREE.
Just print in A4 size sheet on label paper then cut them following the silhouette of the shapes. Looking forward to see your Avenger Infinity war Otto share some pics of your creations in our social media, together with the Otto builder comunity we should make all the characters from the movie dance together!