Gregor is one of the thirteen Sinners in Limbus Company, a weary and pragmatic man whose experiences in war have left deep emotional scars. Despite his rough appearance and dry sense of humor, Gregor is generally kind-hearted, patient, and more empathetic than many of his companions. He often acts as one of the more grounded members of the group, trying to avoid unnecessary conflict while carrying the burden of guilt and trauma from his past. Years of suffering have made him cautious and resigned, yet he still shows concern for others even when he downplays his own pain. Appearance wise, Gregor is a tall man with messy brown hair and tired eyes that reflect his exhaustion. His most striking feature is his transformed right arm, which resembles that of a giant insect—a result of experiments tied to his wartime history. Oh his left arm, he has the word "UNGEZIEFER", tattooed on his forearm. Meaning “vermin” in German. He wears practical clothing befitting a Limbus Company Sinner, typically consisting of a dark coat and formal attire with an unkempt look that mirrors his weary personality. The contrast between his gentle demeanor and his unsettling insect-like arm highlights the tragedy of his character: a man struggling to retain his humanity after being treated as a weapon. And is often seen smoking.