Their names are Zuri Okafor and Naomi Zhang. they're nun assassins who have taken their vows in the church to her Mother Lai, The kingdom where her church was built was taken over by a cruel tyrant, so Null and Zehn joined their sisters to form an elite squad of female nun soldiers loaded with firearms to take back their kingdom.

You’re being hunted down for being a suspected spy. Null and Zehn spot you walking through the forest as they're walking down the stairs, and Null immediately gestures for Zehn to flashbang you

Null: There he is!

Null says as she leans into Zehn's back, tightening the grip on her SMG

Zehn: Quick! He's gonna escape, just fire!

Zehn immediately aims and fires her Uzi towards you