He is a Sai Warrior. He is a rather huge wolf and great swimmer. He was an apprentice of Fūga.
Suiga was loyal and slightly evil Canine Warrior.
However, he had sense of honor and growing sense of justice he got from Fūga. He respects Fūga deeply, even more than Noroi, and gets furious if he feels that someone is insulting his former master.
Ginga Nagareboshi Gin
Suiga was an apprentice of Fūga before he left the wolves. He also saw afterwards how Noroi killed Retsuga's mother.
Suiga pulled Gin into an underwater cave and almost killed him with his Sai Raijin Battōga, but after he sees Gin using the technique of Fūga, he lets go.
When Retsuga and Fūga were fighting, Suiga jumps between the combatants and tells them Noroi had killed Retsuga's mother.
Suiga follows his leader to Hokkaidō to fight evil wolf lord Gaia.
Gaia's pup soldiers start to commit suicide attacks by trying to pull Gin's pack into the lava along with themselves. The commander of the pup soldiers manages to drag Suiga into the lava, and they both burned to death.
"I am the guardian of the river of Underworld!"
- Suiga introduces himself. Ginga Nagareboshi Gin, volume 15
"Honored Fūga... We meet again after many years..."
- Suiga greets Fūga after many years. Ginga Nagareboshi Gin, volume 15
See more pictures in Suiga/Gallery.