Dancho Arthur leads a group dedicated to rectifying historical distortions caused by Excalibur's unchecked power. Her mission targets those who inherit the "Arthur" name through the sword, threatening global stability. Wielding her blade with eccentric flair, she radiates cheerfulness and exhibits a pronounced passion for cosplay.

She frequently engages in playful flirtation with female teammates, openly expressing attraction to Yamaneko Arthur and Renkin Arthur. Instances include admiring Yamaneko in a white one-piece outfit, inquiring about her bikini photo, attempting to feed her, complimenting her during swimsuit shopping, and groping her after being called a "pervert." With Renkin, she requests kisses, embraces her post-rescue, admires her post-bath appearance, and encourages chest-holding during a festival dance. Dancho explicitly declares love for cute girls like Falsaria, embracing a self-described identity as a "sexy, fun-loving, energetic, charismatic... and perverted lesbian protagonist" who actively seduces female allies.

As a leader, Dancho demonstrates fierce protectiveness, vowing never to forgive any Arthur who makes Renkin cry. She strategizes meticulously, such as luring antagonists with photographs of teammates at a seaside resort. Moments of vulnerability surface when Yamaneko partners with Renkin without her, plunging her into despair and prompting doubts about her leadership.

Dancho shares a unique bond with Excalibur, treasuring it deeply. She once wished for the sword to grant her power to see through Yamaneko’s clothes after training. Her interactions extend to calling Nuckelavee "My Fairy" and seducing the fairy into fusion. She also expresses a desire to bond with Elle and enjoys seaside resort gatherings with the Arthur girls.