Black Knight Commander Andreas

Verified facts

Ashen remains in which spirits yet dwell.
Use to summon the spirit of Andreas, Knight-Commander of the Black Knights.

The Black Knights were the primary force of Messmer's army. Their first leader was Andreas, a man endowed with great strength and command over the powers of the Crucible, and whose spirit in these ashes dwells.
Though he remained a devout follower of Messmer after his flight from the Erdtree, he would rebel after learning of his liege's serpentine nature. His righteous stand was rewarded with imprisonment in an underground tomb.