The Peering Titan was a 3-4m class Titan and had a disproportionately big head and shoulder-length, messy, brown hair with brown eyes. Its body was relatively toned, and it always had an angered expression on its face.
During the battle for Trost District, a Bigmouth Titan happens to catch its arm on Mina Carolina's omni-directional mobility gear grapple wire as she is trying to attack it, bringing her crashing against the Wall and then down to the ground, knocking her into a daze. The Peering Titan spots her just before she gathers herself and then goes on to pick her up and bite most of her head off as she struggles, killing her as other trainees die around them.
It is seen once more afterwards, having made its way with other smaller Titans into the equipment depot of the military headquarters in Trost. As part of Armin Arlelt's plan to clear out the Titans from the depot, Sasha Braus attacks it, but fails to land a killing blow. As the Titan approaches Sasha, Mikasa Ackermann comes to her rescue, killing the Titan.