Kussaku ( クッサク, Kussaku) was a shinobi from Kirigakure and part of the Sensor Division.
Kussaku had long black hair and his bangs hang over his blue
Allied Shinobi Forces' forehead protector. He wore the typical Kirigakure flak jacket.
Kussaku using Water Release was able to erect an immense
Sensing Barrier along with others assistance, which allowed him to monitor the battle between the Allied Shinobi Forces and the White Zetsu Army.
Fourth Shinobi World War: Confrontation
He became worried when he sensed
Killer B enter Tailed Beast Mode.
Fourth Shinobi World War: Climax
Ten-Tails reached maturity, the beast fired a Tailed Beast Ball straight towards HQ, killing Kussaku and the other inhabitants.
In the databook, he is portrayed as a shinobi from Iwagakure.
↑ Fourth Databook, page 206
Naruto chapter 613, page 15