Oliver was a man of average height with short light hair that he kept styled in an undercut. He had a thin beard.
Oliver accompanies Floch to retrieve Zeke from Levi Ackerman and the soldiers guarding him. En route to their location, Floch hears a sound resembling thunder near the edge of the forest. They go to investigate and find a completely destroyed wagon, along with an injured Levi lying on the bank of a river. Hange flees with Levi's body and Oliver is one of the soldiers who chase after the two. Oliver's throat is slit by Hange while he is looking for them.