*Zero, formerly named Roseprior to obtaining the power of song, is the main protagonist of Drakengard 3. She is an Intoner, one who is gifted with the ability to manipulate magic through songs. She is the eldest and the most powerful of the Intoners. Zero is on a killing spree and relentlessly hunting her sisters.

Zero's left arm is prosthetic. She gains a distinctive flower growing out of her right eye, which continues to grow. Mikhail is her trustworthy partner.

Zero's Prologue Zero first met Michael when he was drawn to the battle between her and the soldiers that served Caerula. He then attempted to kill Zero as a game, but she used Michael's firepower and brute strength to eliminate the soldiers trailing her. While trying to kill Zero, he came to notice the flower growing within her and laughed at this realization. Once the soldiers were defeated, he didn't proceed with his attack and only asked to talk with Zero.

While transporting Zero to the mountains, Michael wanted to know more about Zero's Flower. He explained to the Intoner how dragons have an existence deeply connected with the Flower, and that the latter and the dragons were natural enemies due to the dragon race being the only beings capable of destroying the Flower.

Michael agreed to help Zero kill her Intoner sisters and also to kill Zero herself when the task was done. Once at their destination, Michael tested Zero's strength and power over the Flower by tasking her to kill the magical beasts on the mountain castle in return for not killing her immediately. Zero soon completed the trial, and Michael took her to the Forest Country for another test.

Two months later, Michael served as the final test of strength for Zero within the Temple of Sands. Zero won the fight, and as promised, Michael began fighting by her side from then on as her friend and companion.

The sisters are quick to defeat the Lords.*