Pearce Thorn commands a mecha in the Imperial Army of Grandiga's Burger Squad. A soldier defined by a serious demeanor and unwavering sense of justice, he places mission success above all else. This intense focus on duty manifests as inflexibility; he strictly adheres to protocols and objectives, leaving little room for deviation.

This rigidity contrasts sharply with his squadmate, Blake Boyer, who serves as both pilot and mechanic but displays less soldierly motivation. Pearce frequently admonishes Blake for this perceived lack of commitment, warnings Blake routinely ignores. This dynamic underscores Pearce's strict expectations of military discipline.

Physically, Pearce possesses grey hair and blue eyes. His role remains centered on his military function, steadfast commitment to duty, and interactions within the Burger Squad.