Cis had chin-length, straight brown hair tied back in a ponytail and hazel eyes. He wore the typical Scout Regiment uniform.
During the 57th Exterior Scouting Mission, Cis works with Ness to take down an Abnormal Titan, with Ness taking out the Titan's ankles, and Cis destroying the nape of its neck as it falls. Almost immediately after, another Titan appears. Following Ness' lead again, Cis tries to strike at the Titan, but it intercepts and crushes him effortlessly.