Dorian1453 / Mystical Pie asked Club Penguin Island Support a super great question, about Club Penguin Usernames being transferred over to Club Penguin Island. He asked if Banned Penguin’s Usernames from Club Penguin could still be used in Club Penguin Island.
Club Penguin’s response to that was “Unfortunately if your original Club Penguin account was banned we do not have a way to transfer the name to Club Penguin Island.”
I can understand why they can’t, for a few reasons. One is because you have banned your Penguin on Club Penguin, so why would they allow you to have it again on Club Penguin Island. Second, Banned accounts are in a different database, and they can’t restore them. But remember these are just my thoughts on why they can’t. If you want to truly know why, send Club Penguin Island Support an email at (email@example.com).