Taishou emerged as an original character in the 1969 anime adaptation, gaining such popularity that subsequent series and manga runs incorporated him. He consistently appears as a heavyset elementary school student who functions as the protagonist's primary bully and rival, regularly flanked by henchmen Gyoro and Goma. Though artistic interpretations vary, his portrayal remains uniformly tall and overweight. His initial one-dimensional bully role in the 1969 series evolved in later adaptations. The 1988 iteration introduced a secret romantic interest in the protagonist, expressed through clumsy, persistent rivalry rather than direct affection. His abrasive and aggressive exterior contrasts with unexpected kindness, particularly toward his younger brother Shosho. He acts as Shosho's protective primary caretaker, displaying unwavering loyalty despite his antagonistic behavior toward others. The 1988 series expanded his background, revealing his full name as Daisaku Akatsuka and cementing his role as a comedic foil whose exaggerated schemes consistently fail, often thwarted by the protagonist's magic. Gyoro and Goma persist across all media as inept accomplices who suffer physical reprimands for their failures. The 1998 series maintained these traits while modernizing designs and settings. His rivalry intensified with characters like Eiji Haraguchi, who became both a romantic competitor and bullying target. The 2012 live-action film reimagined him within an adult protagonist's corporate conflict storyline as a childhood acquaintance. All adaptations depict his consistently poor academic performance, offset by flashes of unexpected emotional insight. While vulnerability and comedic elements gradually increased across media, his core identity endures as a physically imposing yet emotionally conflicted rival.