Note: whoever is cast as Echo may be asked to voice Noise, as they share a body.

The subservient and devout valet of Vincent Nightray, she obeys orders without question and without fail, often acting as an emotionless doll Vincent can toy with. She does this to keep Noise, the other personality in her body, safe. For most of the series, she speaks in third person, monotone and void of emotion unless it trickles out against her will.

In the anime, she and Noise are both voiced by Ryou Hirohashi.