Taias

Taias lives with Jacob on the world of Emrion. They became friends when Jacob happened upon her when she was close to death and helped her out. Taias is the strongest in the group, skilled both with and without weapons, but usually takes a backseat in battle. 

Taias looks human but is actually not. Her mouth is abnormally wide and her jaw can unhinge. This makes it difficult to speak so she uses sign language. The mask she wears also serves as a sort of warning, as she's not afraid to take a bite out of anyone who pushes their luck too far.

She is in a relationship with Rias.