Sumashi

was a tokubetsu jōnin of Iwagakure.

Background
He and his group attacked Team Minato during the Third Great Shinobi War after they broke into Iwagakure territory. Congratulating the young shinobi for achieving this feat, he then attacked Kakashi. He was however presumably killed after Minato Namikaze teleported to his team's side after being alerted that the kunai he gave Kakashi was thrown.

Appearance
Sumashi had a short crop of black hair, small dark eyes and thick eyebrows. He wore the standard attire of the Iwagakure shinobi complete with a forehead protector which he wore like a bandanna, flak jacket, and the single left-sleeved shirt with a lapel running down the right side of his waist and sandals.

Abilities
Though little was known of his skills, he was proficient with Earth Release techniques witnessed by his use of the Earth Release: Tearing Earth Turning Palm in an attempt to bury the members of Team Minato alive.

Trivia

 * Sumashi is the only introduced tokubetsu jōnin in the series who is not from Konohagakure.