Kateesh

The Kateesh!  Ahhh....  that is you!    You (plural) are the Kateesh!  You (singular) are a Katoosh!  Or at least so you have been told by Glavin, Arm of Heimdal.  The teesh symbol seems to indicate it is true as it seems to punish you every time you try to defy the will of The Lady of Pain, if Glavin can be believed.