Momo

is an unknown assailant.

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.