This is a custom made Boba Fett viking helmet. It combines Boba's futuristic bounty hunter styling with the traditional horns of a viking helmet. I tried to reach HÃ¤gar the Horrible for comment, but his wife Helga wouldn't let me talk to him because she put him in the doghouse after forgetting to wipe his feet before coming into the house after a raid. Then I asked if they ever make love with their helmets on and pretend they're both wild bulls and she chased me out with a broom. That's a yes.
Hit the jump for a couple more angles as well as some steapunky Vader, Stormtrooper, Optimus Prime and Bumblebee helmets the Etsy'er is also selling (all $200-$250).