Watch Captain Garviel Praxor Severus
Severus is the current Watch Captain at Watch Fortress Erioch. A proud Ultramarine he likes his marines to execute their operations in adherence to the Codex Astartes. He is realistic though and understands that some of his cousins from other chapters may not have it within their reach to meet the standards laid down by Robute Gulliman.
This strict, and almost arrogant approach aside he is a capable Watch Captain, and seems to have found his calling. Interestingly it is a matter of record that Severus has not been back to Ultramar for a very long time and there has been speculation that the Captan intends to end his days with the Deathwatch one way or another.