Narrator:
How did you know?
Some people's personality just really shine through into their characters.
For instance Azrael*, Grend, and Oren were all very, very, very similar personality wise, which made figuring out that they were played by the same person very, very, very simple.
Also Zarat had issues with not being the guy in charge and having a party that didn't just kowtow to him... and... well... Brody was clearly designed to solve that 'problem'. (Also, when he came back you mentioned he was a returning Player. They're weren't too many possibilities at the time and Hitomi's Player
had just left...)
Inversely Mario, Ardenas, and Chou are dissimilar enough to be impossible to identify as being the same person... but the Player sometimes posts as the wrong character, making that one pretty easy to figure out. :P
* The new Player who has taken over Azrael is clearly different from the original Player.
Most every one else too. Wouldn't know whom all Blue Dwarf was playing for instance if we didn't have this thread over here:
link to a message in this game