Devil Rebirth

Devil Rebirth (デビルリバース), also known as Devil Reborn or Devil Incarnate, is the largest character in the series and is at least four times taller than Kenshiro. Sometime before the main story, he was a merciless killer who slaughtered 700 people. He was sentenced to suffer thirteen executions for his crimes, but he miraculously survived all of them. Seemingly invincible, he was sentenced to 200 years imprisonment deep within Villainy Prison - a compound which houses the world's deadliest and rotten criminals.

During his years of imprisonment, Jackal stole a photo of Devil's mother and later used it to fool the demon into thinking they were brothers. A surprisingly loyal son for his mother's memory, Devil felt attached to Jackal as his "older brother" and fought Kenshiro at Jackal's behest. His monstrous physique and fighting style were threatening but they failed to protect him from Kenshiro's attacks. Defeated and devastated, he cried for Jackal to help him and held onto him in panic. They both perish together when Kenshiro leaves them with a stick of live dynamite.

Fighting Style
Rakan Niō Ken ("Arhat Deva King Fist") is a forbidden 5000-year old martial art from ancient India. "Devil Rebirth" is in fact the title of the successor of this assassination art. This fighting style is known for it's extremely brutal and violent techniques, including Fūsatsu Kongō Ken ("Wind Kill Vajra Fist"), a very powerful gale.