Page One is one of the Tobiroppo, the strongest Shinuchi of the Beasts Pirates. Due to his actions and role, he is a supporting antagonist in the Wano Country Arc. Page One is a shortish young man (marginally shorter than his proclaimed elder sister) with purple hair in a sidecut, shaved off on the left side of his head while on the right kept long and swept down, reaching to his collarbone. He has sharp, angular eyes set under slightly heavy, hairless brow ridges. A tattoo of his name in block capitals (dark-cyan with light-green outlines) frontally occupies his upper body, in a right-to-left tilt upward: the "P" being on his right biceps, "AGE" across his chest, and "1" on his left deltopectoral groove. Like his sister, Page One dons a mask over his lower face up to the nose, split down the middle into a white (right) and black (left) half, as well as a bucket hat with lateral, upward-curving horns, which is bicolored like the mask but with the left side dark-green instead of black. Otherwise, for clothes, the man sports a nearly ankle-length cape held closed by a single cord below its standup collar, colored light on its outside and dark on its inside. Under said cape, he wears a light-colored shirt with long, cuffed sleeves, a point collar, and a dark tie. His hands are kept in black, tight-fitting gloves that reach nearly to the elbows, mostly hidden by said sleeves. Above his waistline is a dark-blue abdominal wrap, frontally held together by brown, double-crisscrossed lacing. Below, connected with a pair of dark suspenders, Page One takes to wearing baggy, knee-length pants of a lighter blue tone. Tucked into them above is a half-skirt piece colored the same, hanging down over the upper backside of his legs, with a brown belt visible that bears a golden skull buckle. Lastly, of seemingly matching color as the pants is a pair of plain, high-shafted boots.
Around his peers and superiors, Page One tends to display a rather serious, if slightly meek disposition, driven to follow objectives with a single-minded and no-nonsense approach, and not rejoining to insults leveled at him by his fellow Tobiroppo. He is usually the first to be exasperated at his sister Ulti's quirky antics, especially so should they devolve into disrespect toward higher authorities, and is flustered by her childish displays of affection for him. Yet when in combat, Page One shows himself fully confident in his power, if not disposed to arrogance, and has been seen with a wilder, more thuggish side to him. Believing that anyone rebelling against the administration of Wano should be made an example of, he has no qualms about a powerful pirate like him being sent to deal with such a matter. He was willing to use the hunt for a single defiant food vendor in Sanji as an excuse to destroy and devour the contents of multiple unrelated food stands in the Flower Capital, telling their owners to scream for the offender to show himself if they wanted the destruction to cease. Therewhile, the man exhibited a degree of gluttony, gorging on soba noodles from the shops he wrongly attacked and at one point deciding to attack a fruit shop just because he felt like snacking on fruit. When Sanji prepared the employ of his Raid Suit, Page One wondered if its container was canned food. It is unknown if Page One and Ulti are blood-related, but either one seems to acknowledge the other as their sibling. Page One specifically (being two years younger than Ulti) refers to her as "elder sister" while Ulti endearingly calls him "Pay-tan" being a more diminutive or "cute" version of the name suffix "-chan" (with a childish connotation, usually used by and to address children) — much to Page One's chagrin. While Page One and Ulti seem very close, the former is often seen being exasperated by Ulti's fickle, childishly aggressive demeanor towards their crewmates, especially if constituting disrespect toward superiors, like Kaido himself. Page One is also not exempt from said belligerence on Ulti's part, like when he attempts to rein in her behavior, which makes Ulti snap at him for telling her what to do. Furthermore, due to Ulti being seemingly more attached to Page One than the other way around, he finds his sister's overly clingy, protective behavior towards him irritating, constantly rejecting her demands for affection. As a result, the siblings' relationship is rather volatile, as Ulti's mood towards her brother can range from supportive and affectionate to demanding, to abrasive and outright violent, usually escalating the more Page One tries to rebuff her. In their search for Yamato, for instance, Ulti chased after her brother, even latching onto and forcing him to give her a piggyback ride at one point, ignoring his protests to leave him alone. Often, Ulti demands attention from her brother or his assistance amidst a battle even if she does not really need it, Page One usually ignoring her attention-seeking or simply telling her to help herself.
As one of the Tobiroppo, Page One holds great authority in the Beast Pirates, ranking just below the All-Stars and Kaido himself. As one of the strongest six Shinuchi, Page One is very formidable in terms of combat ability, despite his young age. He was able to hold his own against a Raid Suit-wearing Sanji for some time and, alongside Ulti, effortlessly defeated Nami and Usopp. Page One ate from the Ryu Ryu no Mi, Model: Spinosaurus, an Ancient Zoan-type Devil Fruit allowing him to transform into a spinosaurus. He boasts tremendous strength in his full-beast form, particularly in his jaws and tail, able to effortlessly wreck buildings using them. In his humanoid hybrid form, his arms become long enough to use offensively and hold great strength as well, being able to overpower a kick from a Raid Suit-empowered Sanji and send the Straw Hat cook crashing through several houses. As an Ancient Zoan type, Page One has a high amount of durability, able to recover quickly from strong attacks dealt to him by Sanji in his Raid Suit and a Gear Third-using Monkey D. Luffy. Page One's first appearance was with fellow Tobiroppo X Drake, after they had been dispatched to the Flower Capital by Queen to kill a soba stand owner named "Sangoro" (Sanji of the Straw Hats). Going on a rampage in his full spinosaurus form, Page One wrecked several soba stands in search of his target. This eventually coerced Sanji to come and attack him, causing Page One to call his comrades to their location. As Page One faced the cook, Sanji donned his Raid Suit and, when the former attempted to catch him with a bite, turned invisible, next kicking Page One in the stomach. This made Page One transform into his hybrid form and assail Sanji with a powerful arm swipe, overpowering the latter's opposing kick and sending him crashing through several buildings. Thinking his foe was dead, Page One prepared to bring him to Kyoshiro, only for Sanji to unexpectedly drop down from above, assaulting him yet again in what caused a large explosion. Though ultimately, the fight's outcome was not shown, Sanji was able to escape the Flower Capital. On the day of the latest Fire Festival, Page One arrived on Onigashima with the rest of the Tobiroppo. They sat down at Kaido's castle awaiting their meeting with the Governor-General, bickering amongst themselves. When Kaido then welcomed the six in his castle, he gave them the mission of finding his "son" Yamato, saying he would let them battle one of the All-Stars for their post should they succeed. While subsequently searching for Yamato inside the castle, Ulti tagged along with Page One and forced him to carry her when she grew tired. After tumbling down some stairs, they encountered Monkey D. Luffy.
