A quick search on the Inter-tubes (wish I had thought of this a long time ago, this Internet thing is cool - I think it might catch on!) has revealed to me that the Muppets have a character called Joe the Armadillo.
Here he is:
OK, so apart from simply being incredibly ugly (it's the lips! Jebus, 'dillos don't have lips! Gawd those are hideous!) Joe the Armadillo just isn't one of the cool Muppets, like Kermit or Animal or even Fozzie. In any event, I want to be clear that Joe the Armadillo is not the inspiration for my online handle. I'll tell that story some other time, but for now, for the record - I arrived at the name Armadillo Joe all on my own.