Basara is a type of yūrei
(or ghost) who was "reborn" due to an extreme hatred he harbored
before his death. Basara
and his wife Kagaribi were both killed by the demon Zankuro.
Because his hate for the demon was so deep, he came back from the dead.
Although his heart and mind had gone mad, he hunts Zankuro for revenge.
After Zankuro had been killed, Basara searched for ways to finally rest
in peace. After finding out that Amakusa was the one who brought him back
from the dead in Samurai Shodown IV, he heads for Shimabara to kill Amakusa.
His soul was eventually captured by Mizuki
and was sealed away.