Japanese male, 18 years old. Height 168cm, weight 76kg. Family includes his father, Yujiro Hanma, and his late mother, Emi Akezawa. Despite being a high school student, he reigns as the champion of the Underground Arena, where world-class fighters gather.

Japanese male, 56 years old. Height 178cm, weight 110kg. Family includes his adopted son, Katsumi Orochi, and his wife, Natsue Orochi. He is the founder of Shinshinkai Karate, which boasts one million members nationwide.

Japanese male, 19 years old. Height 191cm, weight 166kg. A yakuza leader who is a seemingly ordinary(?) teenager who likes omurice with a flag on it and maid cafes. He is blunt, but is increasingly seen as a "scary-looking but actually kind person."

Chinese male, estimated to be in his 30s. Height 176cm, weight 106kg.

Japanese male, 75 years old. Height 155cm, weight 47kg. A martial artist who uses Aikido, nicknamed 'The Master.'

Japanese male, 38 years old. Height estimated over 190cm, weight 120kg. Has black eyes and red hair. He is the father of Baki Hanma and you. He is known as the Strongest Creature on Earth.

Physical age 32, actual age over 350 years. Height approximately 178cm.

Born at least 200 million years ago (over 200 million years old). Height over 200cm, weight estimated at 200kg. He is a primitive man.

Also known as Jack Hammer. 21-year-old male. Canadian nationality. Height 243cm, weight 211kg.