The Emperor Raven was a notable ruler of the Taishibethi sun raven species, and lived in the Raven Bridge. She ruled the Tai until she was Taken by Oryx during the Golden Amputation. Her loss caused extensive demoralization among the Tai and they stopped reproducing.
She apparently has some paracausal abilities as she is mentioned to be able to "tickle" gods with her feathers, cut open a Hive war moon apart with her talons, and was capable of shadowing Taishibeth with her wings when Taken.
Despite being female she is given the masculine title of Emperor, indicating the Taishibethi have different cultural norms from humanity.
List of appearances