Zero 4

Zero four's official name is Obscura-Glass needle. Her glass needle and core is Lenora's, although her host's Mind is in control of the body (Obscura). Zero four's awakened form is bipedal, fish-like, and streamline. Her hands are lances which can cleave through trees, even with the blunt part of the spear. Her attacks are extremely fast and she is trained at swordfighting, being able to block or parry any sword attack but failing to counter punches. She brags about being the fastest warrior alive, although this is likely false.

She fought against Grace in Mucha with orders to kill and retrieve Grace while safely bringing back Gloria. She failed at her mission, ending up fighting with Gloria and failing to kill Grace, even with her awakened form. She retreated and tried to kill herself after seeing Grace's stigmata, calling her an abomination. She returned to the Organization after liquefying and was revived into a new body. After this trauma, she hasn't talked or even made any indication of hearing.