Sarah Michelle Geller plays the voice of The Seventh Sister in Season 2 of Star Wars Rebels.
What’s most striking about this character is that her outfit resembles that of the Night Sisters.
The head covering; The shoulder pads; The fighting stance. All are reminiscent of the Night Sisters. It seems pretty obvious that’s what we are to think of with this character given her name of “The Seventh Sister”. Though the Night Sisters were ultimately destroyed, perhaps there were others remaining aside from Asajj Ventress. This will be an interesting character to see in this upcoming season and will be great to see more.