Futsu

Futsu is a kekkei genkai shinobi that fought in the coliseum.

Abilities
Futsu is undoubtedly a powerful shinobi as Oyashiro claimed he was his strongest shinobi. He possesses the Boil Release kekkei genkai, which allows him to simultaneously utilize the water and fire nature transformations to create a corrosive mist that is capable of burning away anything it comes into contact with.

Sasuke Shinden: Book of Sunrise
Oyashiro sends his best shinobi, Futsu, to fight Sasuke and Futsu is quickly defeated.