Figure already stationed on the eighteenth floor, whom the naga adjutant Nihit expects to join there.
Named only in passing when Nihit, barred from leaving, hisses that he guesses he'll be joining Panford on the Eighteenth Floor before glaring at Carl and teleporting away.
The remark implies Panford has already been reassigned or exiled to that far deeper level, and that adjutants who lose their charges are sent there rather than released.
An earlier reassignment to the eighteenth floor whose fate Nihit now expects to share.