Princess Kana Else Gene is the middle sister of the three royal siblings ruling the European island nation of Gene. She excels in technical aptitude, specializing in advanced robotics and mecha design, creating the companion android Rincle and the 60-meter combat robot Junerin, which resembles a stylized French doll equipped with unconventional accessories like an umbrella and purse.

Despite escalating invasions targeting Gene, she initially resists deploying Junerin for warfare, fearing to endanger her creation. This reluctance stems from viewing Junerin as more than a weapon, reflecting her protective nature. Her perspective evolves through interactions with Ooya, an opposing engineer from Japan's Big Mighty robot team. Their meaningful connection sparks discussions on robotics ethics and the purpose of mechanized combat, significantly influencing her mindset.

Confronted by Shimada's overwhelming "Perfect" robot, a superior threat capable of overwhelming Junerin's autonomous functions, she overcomes her hesitation. Taking direct manual control of Junerin, she engages in decisive combat to protect her kingdom. This action marks her transition from passive designer to active combatant, demonstrating acceptance of responsibility and a willingness to personally safeguard her people.

Her character integrates technical expertise, relationships with allies like Rincle and Ooya, and internal conflict regarding violence. These facets converge during the climactic battle, where she synthesizes her technical knowledge with newfound resolve to achieve victory and restore peace.