The Drummer
From The Fifth City Wiki
The Drummer, also known as the Saint in the Drum and the Drummer-in-the-Depths, resides in Parabola under the church at Burrow-Infra-Mump (which was his domain before the Burrow’s fall). He has been sealed there, tantalizingly close to his drum, but not close enough to play it.[1] Members of the Brazen Brigade, the palace guard from when the grand devils still reigned, still make the pilgrimage to his resting place regularly to preserve the holy site.[2]