There's no real way of knowing for sure, but I suspect Disgruntled is actually the Second Head Warden "Elad."
I could be wrong, but he surely looks familiar.
Disgruntled is DEFINITELY not the dirty one.
This gets rather childish, with all these rich kids--middle-aged actually--and their "cute" little "games" of using different screen-names.
One expects more mature conduct out of people old enough to be grandparents.....but these are rich kids after all, who never grew up.