Mission is found on Taris in the Lower City cantina. You first meet her being threatened by a couple of men soon scared off by her wookie companion Zaalbar. Mission is drawn to light despite her brother's turn to a more evil route with his girlfriend. She finds her brother a touchy subject and will not give you immediate information about him.
If you chose to retake your throne as Revan you have the choice to kill Mission or let her free. You can also make Zaalbar himself kill her.
She's voiced by Catherine Taber.