Arthur Peregrine, alias Arthur Percival in Japanese media, crowns himself the self-proclaimed "King of Beyblade" and "King of Hell," positioning himself as a formidable rival. His Beyblade, Prime Apocalypse 0Dagger Ultimate Reboot, wields a Burst Prevention System enabling seamless 360-degree rotation and Eclipse Armor—a defensive upgrade engineered by Gwyn Reynolds. Tan-skinned with medium-length Prussian-blue hair streaked with green, turquoise eyes, and vivid red-and-yellow facial markings, Arthur’s flamboyant style mirrors a blue-and-yellow macaw. He dons a black-olive bodysuit adorned with blue and yellow designs, a cerulean kilt, and dark-indigo boots. Arrogant and authoritarian, Arthur spearheads the organization Inferno to overthrow the World Beyblade Bureau Association (WBBA) and dominate the Blading world. He recruits forcibly from groups like the Spark Wings, demanding unwavering loyalty while deflecting blame for setbacks. His ruthless tactics include sabotaging battles, targeting elite Bladers such as Aiger Akabane and Dante Koryu, and obliterating Beyblades like Ace Dragon and Erase Devolos. Initially triumphant against Aiger, Dante, and Delta Zakuro, Arthur’s reign falters after consecutive losses to Dante and Delta fracture Inferno’s cohesion. Desperate, he allies with Gwyn Reynolds to equip Prime Apocalypse with Eclipse Armor, briefly revitalizing his campaign. A final defeat by the Victories dismantles Inferno entirely. Dorothy Ronny, a Bey engineer, initially aids Arthur but defects to the Victories upon rejecting his tyranny, exposing his reliance on fear over trust. Post-Inferno, Arthur’s sporadic alliances—including training sessions with Dorothy—hint at a tempered ambition. Prime Apocalypse’s signature moves, Dark-Flux and Omega Blast, channel destructive force warped by Arthur’s hunger for control, contrasting the protagonists’ teamwork-driven strategies. His clashes with rivals like Dante and Delta spur their growth, cementing his role as a catalyst within the series’ narrative across the Rise and GT arcs.