I've seen this movie 3 times, and I still get thrown off knowing Metal Beard is voiced by Nick Offerman. I listen and am like "Nuh uh!". Probably because he actually did a voice fitting a pirate, instead of just doing his monotone "Ron Swanson" known way of speaking. If I didn't see some behind the scene video on youtube, I still wouldn't believe it. Not that this film would lie . . . that'd be off.