Granite welcomes you to his humble station. He meanders into a tale about the rest of his people: once awaiting the arrival of the legendary Rogue, they have all since migrated up to the surface world in a futile endeavor to escape the wrath of these forsaken creatures who aimlessly wander the mazes, searching for prizes they cannot obtain.
He somehow conveys all of this through a series of intricate hand gestures. It appears he's the strong, silent type.