Alex serves as Prince Charles' devoted page and closest companion within the Emerald Castle's royal household. He holds the dual roles of the prince's classmate, fencing partner, and longest-standing friend, sharing residence in the castle.

His appearance features bob-cut brown hair with straight bangs, sharp black eyes, and fair skin, consistently shown in his distinctive page uniform.

Alex displays a kind and responsible nature, marked by unwavering loyalty and deep concern for Prince Charles' well-being. He regularly aids the prince in sneaking beyond castle walls by supplying his own attire as disguises and covering for these escapades. Acting as a trusted confidant, he listens attentively to the prince's troubles and offers counsel during crises.

His duties frequently involve mitigating fallout from Prince Charles' mischievous schemes, leaving him troubled by the prince's antics. Alex provides crucial support during pivotal moments, including thwarting Duke Zaral's attempted overthrow of the king. He joins the search for the mysterious girl who distresses the prince—later revealed as Cinderella—and diligently carries the lost glass slipper house-to-house across the kingdom after the royal ball to identify its owner.