Mokoena is a supporting character in Jormungand who serves as one of Dr. Minami Amada's three secretaries. He originally acted as her bodyguard as well, a duty he later passed to Karen Low. Physically, he is a large man with dark skin, close-cropped dark hair, and fair-colored eyes, and he typically dresses in polo shirts and cargo pants. His background is not explored in detail, but his role implies he possesses combat experience. Mokoena accompanies Minami on her frequent, often spontaneous expeditions and is primarily responsible for her safety during these trips. His personality is not extensively developed, but he is shown to be diligent and capable in his duties, maintaining a calm and professional demeanor. His most important relationship is with Minami Amada, whom he serves loyally alongside the other secretary, Malin. Mokoena does not undergo significant character development and remains a consistent, quiet presence within Minami's inner circle. His notable abilities are limited to his implied proficiency in protection and possibly combat, though he rarely takes center stage in action sequences.