Marten Liebert is a minor character in the anime Spice & Wolf: Merchant Meets the Wise Wolf and appears in the first season of the story. He works as a business employee for the merchant Hans Remerio, also referred to as Hans Lemerio. Marten is a middle-aged man around thirty years old with short blonde hair and a matching goatee. He is most often seen wearing a black cloak over his work clothes and a dark beret. His role in the narrative is that of an assistant to Lawrence during a risky gold smuggling operation that Lawrence undertakes for Hans Remerio. During this assignment, Marten is extremely tense and nervous because of the high stakes of the job, and his anxiety is the most clearly shown aspect of his personality. Beyond this, little is known about his personal background, deeper motivations, or any notable abilities, as he does not undergo any significant character development or engage in major relationships outside of his professional connection to his employer and his brief cooperation with Lawrence. His presence serves mainly to highlight the pressure and danger involved in the smuggling scheme rather than to advance any personal arc of his own.