This is Frisk, the Protagonist from UnderTale.
Useful links:
http://undertale.wikia.com/wiki/Player.
Also, i have not completed this game yet. So please do not post spoilers in the comments. Thanks :)
Edit: I was actually calling him "Protagonist" to avoid spoilers for people, but it seems people already know it. Fixed.
IF YOU DOWNVOTE, PLEASE LET ME KNOW WHY SO I CAN FIX IT :)
How to Print?
1.Click on the papercraft design image.
2.Make sure it has not been resized by your browser (you might need to click the image again).
3.Print using your browser's Print function.