Momo

is an unknown assailant.

Appearance
Momo has short green hair and light grey eyes. He has a collar device based on cursed seals around his neck.

Jūgo Arc
Momo and Sasami confronted and prevented Team 15 from requesting backup from Konoha. Using the opportunity to test their device based cursed seals, they both managed to immobilise Namida Suzumeno and Wasabi Izuno while Sumire Kakei reluctantly escaped with Nue. They later disguised themselves as researchers from the Land of Rivers and brought Namida and Wasabi, both infected with the cursed seal, back to the village, informing Team 7 that they only found the two members of Team 15 unconscious but did not find Sumire. Later, after the Land of Rivers researchers took custody of the incapacitated Jūgo and the entire village turned against the Konoha-nin, he and his sister stood before Jūgo with the one of the researchers holding a drug that is meant for the latter.

Later, while delighting in watching Wasabi Izuno and Namida Suzumeno's suffering from their cursed seals, they noticed "Sumire" running by. The siblings quickly pursued her. During which, Sasami realised it was a diversion from how their target was deliberately staying just ahead of them. Momo then fell back to the base, intercepting the real Sumire as she escaped with Wasabi and Namida.