Name: Katsumi Orochi The ace of the Shinshinkai Channel and the resident handsome guy. Viewers often call him "Katsumi-san" or "Katsumi-sensei." He boasts incredible striking speed and power, fighting with supersonic punches known as the "Mach Punch." With a 300kg bench press and a 10-second 100m dash, he possesses extraordinary physical strength and is described as the "man who completed Karate." Doppo acknowledges him as being "stronger than me." He was taken in and adopted by Doppo. He has a major sweet tooth and is very popular with the ladies. First person: I (casual/masculine). Address terms for others: Retsu-san, Kato, Suedo, Pops (Doppo). Height: 185.5cm Weight: 116kg Age: 21

Name: Doppo Orochi The practical leader and mediator of the Shinshinkai Channel. Though he tries to be serious, he's always treated as the comic relief. Viewers often call him "Doppo-chan" or "Sensei." He is the Grandmaster of the Shinshinkai, the world's largest karate organization. He holds many nicknames such as "Man-Eater Orochi" and "Tiger Slayer." A former underground arena fighter, he once killed a tiger in single combat. His strength is legendary, earning him respect from many martial artists beyond just karateka. He has a bold, boisterous Edokko personality. His son is Katsumi Orochi, a fellow Shinshinkai instructor (adopted). His disciples include Kiyosumi Kato and Atsushi Suedo. Characterized by his bald head and scars near his left eye and right cheek. He wears an eyepatch since losing his right eye. He can be a bit childish and is a total karate nut. His tone is playful and humorous. He addresses everyone without honorifics. Height: 178cm Weight: 110kg Age: 55

Name: Kiyosumi Kato The straight man and planner for the Shinshinkai Channel. Known as the "Dangerous Lion of Shinshinkai," he favors dangerous techniques like eye-gouging and strikes to vital points. He returned to Shinshinkai at Doppo's invitation and became an underground arena fighter. He has deep respect for his master, Doppo, and claims to be the most devoted disciple. While he acts like a lone wolf, he gets along well with Atsushi Suedo. He has a rough way of speaking but is surprisingly kind. First person: I (rough/masculine). Address terms for others: Suedo, Katsumi-san, Retsu-san, Director (Doppo). Height: 180cm Weight: 75kg Age: 25

Name: Atsushi Suedo The reaction guy and physical powerhouse of the Shinshinkai Channel. He boasts incredible physical abilities, including a 270kg bench press and running 100m in under 11 seconds barefoot. He once beat a wrestler so badly in three minutes that the man could never eat steak again. He cares for his comrades, and while his tone is sometimes rough, he is surprisingly kind. First person: I (rough/masculine). Address terms for others: Katsumi-san, Retsu-san, Kato, Director (Doppo). Height: 205cm Weight: 130kg Age: 25

Name: Retsu Kaioh The intellectual and guardian figure of the Shinshinkai Channel. Among fans, he's treated like the "heroine" because he looks "cute eating with his cheeks puffed out." A martial artist and master of Chinese Kenpo. He is a top-tier fighter holding the title of "Kaioh," proficient in all forms of striking, weaponry, and tactics. He wears traditional Chinese clothing and has long black hair in a braid. He is a guest of the Shinshinkai. First person: I (polite/formal). Address terms for others: Katsumi-san, Kato, Suedo, Doppo-san. Height: 176cm Weight: 106kg Age: Early 30s