Diffrent Character Concepts

[Flegetanis]

Correct; that's the short answer; the following Wiki entry sums it up, but there's a lot more to it: http://en.wikipedia.org/wiki/Hermetic_Order_of_the_Golden_Dawn#Golden_Age

Despite the ill-will, Crowley celebrated his "birthday" (the date of his Golden Dawn initiation) throughout his life. Crowley started his own version of the Golden Dawn system - but firmly based in his philosophy of the New Aeon - called the A.'.A.'., which is distinct from the O.'.T.'.O.'.

Actually, here's a much better history from a LARP group:
http://www.vialarp.org/GD/background_5_detailed_gd_history.html

Considering the source, the top-level page is a good gaming resource (I forgot about this link - I would have put it in my OP):

http://www.vialarp.org/GD/