Fiona

"I came to the Circle from the Grey Wardens because I saw something had to be done. In the Wardens, we learn to watch for our moment and seize it — and that moment is now."

Fiona is an elven mage from Orlais. She used to be a Grey Warden, and eventually became the Grand Enchanter of the Circle of Magi.

Background
Fiona grew up in an Alienage in Orlais until her family died and she was orphaned. As a child of seven, she was bought as a slave by an Orlesian Count, who kept her as a "pet". She was sexually and physically abused. Eventually she realized she had magical talents, and used them to kill the Count, an act that nearly killed her the first time she used magic. Instead of leaving her to die or summoning the city guard, the Count's widow sent her to the Circle of Magi. She was later recruited by Commander Genevieve after she begged to be recruited. Fiona also saw both Duncan and Riordan through their Joining.

Quotes
Duncan:"So we were going to head out, all of us nervous and sweating like a bunch of elven whores in a chantry—" Fiona:"What is with all the elven whores?"
 * "I am tired of pain. So tired. Aren't you?"
 * "You've heard of the Fade, I hope?"
 * "Go hump your horse."
 * "Fuck the Divine... I'm certain the Divine is a perfectly nice person."
 * ''(Duncan revealing his memorable tale in the Deep Roads)