Karma Fon Belga, captain of the White World’s Silver Knights, dons a Chinese emperor-inspired ensemble, his orange-yellow hair and green eyes contrasting sharply with the single glove adorning his right hand. Charismatic yet haughty, he masks insecurities beneath a veneer of superiority, addressing others as “commoners” while craving validation from authority figures. His lifelong pursuit of the “true white soldier” title, a destiny drilled into him by his father, fuels his bitter rivalry with Yuuki Momose, whom he deems an unworthy rival.

During their clash, Yuuki’s deck summons the White King’s symbols—The ArmoredSacred Walhalance and The Sacred Gungnir—triggering Belga’s psychological unraveling despite the inconclusive battle. Aligned with Leon under the Otherworld King’s command, he reluctantly aids in capturing Kajitsu Momose, Yuuki’s sister, even torching a Green World forest under orders—a destructive act that strains his loyalty.

After Otherworld merges with Earth, Belga continues serving the king until the final conflict exposes the ruler’s genocidal ambitions, leaving him reeling. Post-war, he reclaims his Silver Knights leadership in Otherworld, his combat record marred by defeats against Yuuki and Clackey Ray, the latter during a diversion for Mai Viole’s infiltration.

Belga’s white-themed deck, anchored by The Gigantic Thor, employs strategies reminiscent of J Sawaragi’s tactical style, though their narratives diverge sharply. His choices reflect both calculated ambition and the weight of legacy, intertwining his identity with the cards he wields.