|Weapon: Dark Magic and the Genbu Shield|
|Blood Type: AB|
|Family: Miyabi (servant)|
|Appears in: Toshinden 4|
Genma (幻魔) is a character in the Battle Arena Toshinden series. He made his first and only appearance in Battle Arena Toshinden 4, as an initially playable character.
For as far back as 2000 years in China, Genma has been a storytelling member of a dark assassin clan (rumored to be the same one as Fo Fai's), as well as being an intense researcher of sorcery. After a long time, he mastered dark magic and discovered the secret to eternal life, but doing so eliminated all emotions within him. Since he no longer had a conscience, he began to kidnap young children from around the world so that he could brainwash and train them as evil murderers to do his bidding without question. Among these was a young ninja girl named Miyabi, whom he had placed a spell on that rewrote all of her original memories.
In an unknown past fight, Genma had brutally and callously killed the owner of a very powerful shield. The relic, which was known as the Genbu Shield, was the same one that Chaos had used to carry and was one of the Four Sacred Arms, special weapons which gave tremendous power to their owners. Upon learning that there were three other weapons of its kind, he decided to seek them out for himself. After missing his chance to acquire the Seiryu Spear, which used to belong to the ninja warrior spy Mondo, he entered the fourth Toshindaibukai with Miyabi, along with a cyborg named Bang-Boo in order to gather the Four Sacred Arms all at once.