I had Retcon's name and character concept for many days before Staff Fighting was released to the live servers. I even had the script you see pretty-much written in my head. His face remains covered as a sign that no one can ever know him, not even himself. His waste-recycle chest emblem was something that I had not considered until in the character editor, but it seemed particulary apropo. The overall drab grey of his costume further reflects his feeling of isolation.
The memory of his former life and his world's history is completely gone. However, he remembers his short time in Limbo, and he remains a well-educated adult. Even though he doesn't remember if his powers were used for good or evil in his original life, he made a choice in Galaxy City which suits his temperament just fine.
(Wow, getting the conversation on the left to look ok for various browsers and browser widths was a pain. It is implemented with special HTML formatting. The actual in-game description was just straight lines of text, separated by carriage returns.)