Resident Leper

Another creature dwells down here, the one certainly to fear
He stays below both day and night;
Never does he see the light

Long ago he used to do the show
But his fragile mind degraded with time
Slipping under, never to return
A glance over his shoulder, then he was gone

Now he's become the Resident Leper
Nothing left but a decrepit cretin
Stalking the tunnels with voracious hunger
Leprous, lecherous, down in his lair it's treacherous