Most Creators who have a public status usually are assigned aliases from the game - for example Mitch Krypta's Poptropica alias is Hades, god of the underworld. These aliases are used on the Creator's Blog as well as for campaigns and other miscellaneous appearances (sometimes inside the game).
Creator's usually also have special accounts with their character's attire and custome name on them. These Poptropicans are some of the few custom named accounts - for instance, Jordan Leary has an account with Dr. Hare as the Poptropican's name. These accounts can be friended and the custom names show up on Friends. This is rumored to be because of a filter that prevents names outside of the set Creator names. Skilled coders who may change their names still cannot make their custom names show up on Friends. Also, the only account to have 3 prefixes, Vlad The Viking, is owned presumably by a Poptropica creator. His actual account is unknown but the name can be seen in a video showcasing the Multiverse feature.