Antony Starck, recognized as Antonī Sutaruku in Japanese, reigns as Europe’s competitive card battle champion and the world’s second-ranked duelist. He sports short blond hair with a striking front bang, paired with a flamboyant wardrobe: a pink dress shirt adorned with a bow, a maroon vest, and crisp white pants. Blending theatrical narcissism with unexpected mentorship, he dazzles crowds with grand entrances and self-portrait handouts, flaunting his perceived magnificence. Yet beneath the vanity lies a tactical ally—he covertly aids younger rivals, such as revealing High Ranker Passes to defeated contenders.

His career bears two pivotal defeats: a swift loss to world champion Arata (episode 4) and a hot-springs rematch against Tegamaru Tanashi (episode 12). During the latter, Antony’s ignorance of Japanese bathing etiquette led to comedic overheating. There, his pet bird Solaris concealed the legendary red X-rare card "The KatanaHero Musashied-Ashliger," sparking a contest won by Tegamaru, who then bested him again.

A strategic battler, Antony wields a rainbow-flexible deck dominated by brave-type spirits and spells. Key cards include Kagutsuchidragoon, Bladra, The SunDragonDeity Rising-Apollodragon, Death-Haze, and Sagitta Flame.

Frequently likened to Clackey Ray for his charm and vanity-driven rapport with female fans, Antony’s egocentric flair and tech-adjacent aesthetic also echo parallels to Marvel’s Tony Stark, hinting at a playful homage.