This is my Darknut papercraft from The Legend of Zelda: Twilight Princess. It's my biggest one I've made (about 50 cm with the sword), and maybe the hardest. I'm quite proud of it. I think it's better than my Skyward Sword Link papercraft I made. Here's the link to the craft: [link]
This took me about 3 weeks to build. And yes, you can take off the helmet. You can also switch the swords.
Credit to Ignatius for making the template.