This mecha paper model is Gingerbread Pat (Candy Person 44), the gingerbread version of Patrick McHale, based on the American animated television series Adventure Time, the papercraft is created by WebDude. He makes an appearance in "The Enchiridion!" with Gingerbread Pen and Gingerbread Muto.
He is a cookie with a pink-buttoned red suit. He wears a red-striped, green hat on his short, messy, vanilla white hair. His nose is a red oval and he has pink cheeks. His mouth has wrinkles on each side. [Source: wikia]
You can download the papercraft template here: Adventure Time - Gingerbread Pat (Candy Person 44) Free Papercraft Download