The leader of Liveman. Agile and skilled in aerial and sword attacks, he fights with the Falcon Saber. Red Falcon is the transformed Yusuke Amamiya, who loves rock music. Although he and Jou were once the worst students at Science Academia, he has a strong sense of justice and a kind heart, faces every difficulty head-on and is a constant source of encouragement to his teammates. Age 21.
The warrior of the earth, with the strength of a lion. His weapons are the Lion Punch and the Lion Bazooka. Yellow Lion is the transformed Jou Ohara, who excels at all kinds of sports, especially skateboarding, and even fights on a skateboard. Impulsive and hot-tempered, he wears his heart on his sleeve and never compromises with anything he cannot stand, which sometimes causes trouble for others. A fearless, hot-blooded young man. Age 20.
The warrior of the water and the only woman on the team. In underwater combat she is second to none, and her Dolphin Arrow never misses. Blue Dolphin is the transformed Megumi Misaki, gentle and beautiful, who was already among the elite at Science Academia. Intelligent and calm, she often points out others' mistakes and offers sound analysis. She was once a competitive cyclist. Age 19.
A warrior who joins later, skilled in rapid-fire boxing tactics. His weapon is the Bison Rod. Black Bison is the transformed Tetsuya Yano, younger brother of Takuji Yano. To avenge his brother's murder he built the Bison Liner with Junichi; after meeting Yusuke and the others, he decides to join Liveman to protect humanity. Somewhat flippant and restless, but never hesitates to help those in need. Loves boxing. Age 19.
Joins Liveman together with Tetsuya and specialises in headbutt attacks. His weapon is the Sai Cutters. Green Sai is the transformed Junichi Aikawa, younger brother of Mari Aikawa. To avenge his sister he dropped out of school and built the Sai Fire with Tetsuya. The youngest and least mature member of the team, he relies on others and loves to play around, but he is very caring towards people. Loves rugby. Age 17.
A robot secretary built by Dr. Hoshi, with an advanced built-in computer. She helps gather and analyse intelligence and handles communications. She normally stays inside Gran Tortoise, but heads to the battlefield to give support when needed, and has her own yellow off-road motorcycle.
Principal of Science Academia, who designed and built all of Liveman's machines and weapons. He later gives his life to save a pregnant woman.
Close friends of Yusuke and the others, who worked together on the space reinforced suit. They designed the Bison Liner and the Sai Fire, and were killed by Kenji Tsukigata while saving Yusuke and the others.