Well one of mine has. A while back, I was doing some research on Spider-man for a project (yes, it was a real project) and I found that they completely changed him for the japanese market when they originally introduced him there. To keep it simple, he lived in a giant spaceship called the Marvelor, and would grow to Godzilla size to fight bad guys. I swear, this stuff is too crazy to make up.
So, I was wondering, have you noticed this has happenned to any other of your favorite (or maybe not so?) when being brought over to other countries?