Popsugar Family Diy DIY Big Hero 6 Halloween Costume DIY a Baymax Costume For Your Big Hero 6 Lover October 5, 2015 by Allison Waken View On One Page Photo 4 of 20 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 For the mask, you could go quite a few directions. We decided to use a paper mask and used this template from Happy Thought. Previous Next Start Slideshow DIYHalloweenHalloween Costumes