Login users
All the characters you have saved will appear on your Account > Character Creations.
Up to 50 characters could be created per account.
You can rename/edit/delete them at any time.
Non-login users
Up to 3 characters could be created if you are not logged in.
You can access the characters you have made by going to Home and clicking on "Start creating now."
Then click on the "Edit from library" tab.
Here you will see the characters you have made which you can freely rename/edit/delete.