Marco, Leona's son and potential child of the legendary White Knight, lives secluded with his mother near Takinen Village within Flornel Forest. His tanned skin bears three prominent white stripes, complementing his spiky hair tied back in a ponytail; he typically wields a small axe.

While not conventionally intelligent, Marco possesses innate courage and fierce determination. He acts decisively under pressure, driven by deep loyalty and a protective instinct towards his friends. He forms a close bond with Pinon and the water sprite Luna, joining their core group confronting elemental chaos and a spreading darkness threatening the kingdom.

Marco channels the power of the Fire Seirei, unleashing potent fire-based attacks through his axe, crucial against dark foes. His journey includes profound emotional trials, like witnessing the petrification of his mother and Pinon's parents, leading to vulnerable moments such as crying in his sleep that contrast his usual resilience.

Shared adversities, especially voyages aboard the *Dakart*, forge deeper camaraderie with the crew and solidify his loyalty to Pinon and Luna. Interactions with Leona reveal a familial history where her connection to the White Knight becomes a subject of teasing, adding personal weight to his mission. Marco grows through these experiences, developing a stronger sense of responsibility and unwavering commitment to protect his friends and restore peace.