Despite not being a terrible boxer overall, Aoki's boxing is largely downplayed in the series, making him pale in comparison to boxers like Takamura, Ippo, Itagaki and oftentimes, Kimura. His outlandish personality is usually reflected in his boxing matches where, due to his comparatively unexceptional boxing skills, he constantly thinks of odd techniques to deceive and confuse opponents. He uses unorthodox methods to ruin his opponents' rhythm; it was stated by Kimura that no one is better at ruining a boxer's rhythm than Aoki. He is also a decent out-boxer, and able to switch from orthodox to southpaw. Lacking any special skills to speak of, Aoki's matches tend to end up becoming extremely messy mud fights, much to the displeasure of his audiences. Eventually, his 'Frog Punch' became a trademark and earned him the nickname 'Leap Frog' or 'Frog Man' by his audiences. It is then mentioned by characters in the series that Aoki's boxing ability can be comparable to that of a national champion's, also since Aoki, who been removed of his weakness of flinching against straight punches, Aoki can clearly see how the opponent's body moves, as well able to parry and counter them with ease. Since his loss to Iga, Aoki is reliant on boxing fundamentals a lot as he never rely on mudfights alone as Aoki uses combinations and brawling methods before or after throwing a Frog Punch
Because of a previous right straight from Takamura that caused him to flinch every time he faced a right straight in the ring, Aoki's potential was held back a significant amount. This has made him easier to hit, making him lose patience and resulting in the many "mud fights" he's had throughout the years, but this was fixed by having him wear special headgear while having Takamura throw repeated right straights at him. Takamura also admits that Aoki's natural boxing ability can be greater of that of Kimura's should he overcome his weakness. Aoki also has a weak jaw.[33] His fists are round and squishy, so they tend to slip out from their opponent's damaging area, making them ineffective for damaging his opponents. If he gets haemorrhoids such as when Takamura used "Special 7-Years Killing: 100 Shots" on him, he can't use his Frog Jump.[34]