The holiday season is all about giving and caring and all those warm and fuzzy feelings, but for the Humbugs, it’s a time to be grumpy, greedy and downright rude!

Zehnder Communications, an American design firm, is using Layar to bring their latest creation, the Humbugs, to life. These fun-hating killjoys are featured on a set of free printable paper Christmas tree ornaments that spring to life in all their nastiness when scanned with the Layar App.

“These crude-rude, seedy-greedy creatures slink about in mockery of this most joyous season. And now it’s time to take a stand,” Zehnder’s website declares. “This year, Zehnder has devised a new way of exposing the Humbugs by adding a little cheer to the holiday at their expense.”

You can even battle against the Humbugs in a side-scrolling adventure game! But the real fun comes from seeing the paper ornaments come to life when you scan them with the Layar App. Enjoy!

About Zhender: Zehnder Communications, a full-service advertising agency, was one of the first agencies in the U.S. to venture into Augmented Reality in 2009 with its Voodoo Music Experience app. The app, featured in Fast Company, was one of the first of its kind — innovative apps for brands like Sony and Disney parks soon followed. Zehnder serves clients across the country from its offices in Baton Rouge, Nashville, and New Orleans. The agency was founded in 1996.