"You two clearly tread the paths of the swole. A rare divergence amongst your kind. Where are you hiding the protein?"Ephrael Stern, the Daemonifuge is a Sister of Battle working on the behalf of the Harlequins.
Official Canon Edit
TTS Canon Edit
Ephrael Stern has made it to the Black Library, but she's very displeased by the Harlequin's food. She barges in on Cegorach's jokes to loudly complain about the Xenos' hospitality before vanishing back into the library.