Danna

 was an old tutor at the Time Lord Academy. She was a finest military strategist in Gallifrey's history. She was studying the Daleks who was trying to get to the to get through the Obscura as well as guarding the weapon. She told Ace that all she wanted to see was Earth after here. She was getting old and couldn't shoot straight. Braxiatel executed her. Brax was haunted by her voice as he made his final plan. (AUDIO: Soldier Obscura)