Sellus Gravius is an Imperial Guard and Knight errant who resides in Seyda Neen, and is a Knight Errant of the Imperial Legion. He is from the Order of Ebonheart and serves as an Imperial emissary attached to the Census and Excise Office. The Nerevarine speaks with him when leaving the Census and Excise building. He gives them a letter and package for Caius Cosades, as well as starting them off with a few Septims. He also offers the task of clearing Firemoth of an army of skeletons.