A man born with super human strength that can resist even bullets, similar to Kenshiro of Hokuto no Ken.  He also heals much faster than a normal human.  He was separated from his younger brother Nachi since childhood and was adopted by the Saiga family. He has a scar in the shape of the Star of David on his right hand which is the source of his great strength and skill. This scar is also a sign that he's destined to overthrow his real father.     Riki's mother was executed for poisoning 13 infants, and Riki and his brother Nachi escaped prison before they were dealt with punishment.  Zhāng Sh&agrave;n-Guǐ  stopped Riki from committing suicide infront of his mothers grave and became Riki's sifu in the ways of Qi Gong.      Riki's Girlfriend/Childhood friend was driven to death by Yakuza (although the Yakuza only caused her to quickly commit suicide after being kidnapped).  This lead Riki to murder the Yakuza which sent Riki to jail.  He keeps the 5 bullets that the Yakuza shot him with in his chest as &quot;souvenirs&quot;.      After Riki escapes jail he searches for his brother Nachi. 

In the late 1990s, society is descending into ecological collapse and totalitarianism. Saiga Rikioh, 21, finds himself in jail. 
Set in the near future, at the privately-owned Tokyo State Prison. Like the chilling wind of the end of a century, a mysterious man with a six-pointed star on his fist entered the pen. 
Saiga Riki-Oh--serving a term of three years, due to assault, his first offense. Riki-Oh openly antagonizes The Four Emperors, four powerful prisoners that control the prison and keep the rest of the inmates in line.

A Retelling of the prison arc of the manga RIKI-OH! 
The story follows Saiga Riki-Oh, a young man blessed with inhuman strength. After taking revenge against a yakuza boss who was responsible for the death of his girlfriend, he ends up in a maximum security prison owned by a private organization. 
The prison is divided into four blocks, each run by a member of prisoners known as the Gang of Four. The first member is a tattooed knife wielder known as Hai that runs his block in a mafia style family system. The second member is a giant man (known as Tarzan in the live action) with incredible strength. The third member is a effeminate fighter named Huang Chaun that is growing Opium in the prison. The final member is a small man that use sewing needles as his weapons.

__Height:__ 164 cm

**Non anime roles:**
- Kamen Rider 2-go - Skyrider (TV Series) and Kamen Rider Super-1 (TV Series)
- Kamen Rider V3 - Skyrider (TV Series) 
- Kamen Rider Stronger -  Skyrider (TV Series) and Kamen Rider Black RX (TV Series) 
- Ninpuu Sentai Hurricaneger - Roku no Yari Satarakura (TV Series)

Child of Destruction is the sequel to the RIKI-OH OVA Wall of Hell. Child of Destruction tells us more of Riki's past, as we flash back to his childhood to learn the terrible fate of his mother and how he himself was taken away from his twin brother Nachi during a game of hide-and-seek, with Nachi's plaintive cry of "Are you ready yet?" haunting him through the years. Riki has a six-pointed star emblazoned on his hand, while Nachi has a swastika on his, the significance of which go unexplained. Riki finds himself in the town of Misaki, dotted with illegal nuclear power plants and run by a religious fanatic military organization called "God's Judgment." He is taken prisoner and made to fight in gladiatorial matches in a sprawling arena. He finds his brother, whose special powers have given him the name of "Savior," but his reunion with his resentful sibling turns sour rather quickly. Part 2 is much gorier than Part 1, with Riki smashing his fists into numerous soldier opponents with far less restraint. 
(Source: IMDb)

Riki-Oh Saiga