Benigumo belong to Shinnosuke Anzai and is a strong fighting dog.
He’s the son of Futabaō and Mitozakura and half-brother of Unryū.
Benigumo was raised by Shinnosuke Anzai. He never felt any love, but was merely a toll to kill Zero with. He was trained only to be swift and bite hard. At his first match with Zero he loses. He bites on to Zero’s neck to kill him, but Zero does the same. In the end, Benigumo has to release his grip and is defeated.