Ryune Zoldark, alias Lune, is the daughter of Bian Zoldark, founder of the Divine Crusaders. Trained from childhood under her father’s harsh regimen, she honed superhuman physicality through weighted gear, competitive swimming, and feats such as deflecting bullets with her wristbands or pulverizing stone with her grip. Though a peerless warrior, she privately wrestles with insecurities over her muscular frame clashing with feminine ideals.

Her early life centered on avenging Bian’s death by targeting Masaki Andoh and the Cybuster, but she later forgave Masaki, joining Earth Federation forces against existential threats like the Inspectors and Einst. Timeline divergences shape her path: in Classic, she abandons the morally compromised Divine Crusaders for the Federation, while in Alpha, she pursues suspicions of her father’s Jovian captivity.

She commands the Valsione, a personalized humanoid variant of the Valsion mecha. Its design mirrors her expressions and movements, retaining the "Cross Smasher" armament but rejecting the original’s aesthetics. Later iterations, like the La Gias-enhanced Valsione R, further reflect her preferences.

During Meikibos’ assault on Mao Industries in *The Inspector*, she aids protagonists before requiring rescue by allies, afterward fighting consistently alongside Masaki against extraterrestrial foes. Her personality merges upbeat directness with a sharp contempt for those obsessed with power—a lesson from her father’s failures.

Multiple timelines depict her unrequited affection for Masaki. Outside battle, she enjoys historical dramas and practices frugality, often prioritizing thrift. In Original Generation conflicts against the Einst and Shadow Mirror, she demonstrates tactical flexibility and steadfast loyalty. Her arc evolves from vengeful aggression to a disciplined yet compassionate protector of humanity, blending martial rigor with camaraderie and dry wit.