Brynn is a Royal Mystic specialising in spiritual magic. She appears to have a very calm, patient and kind nature.
Kallak writes to her at the beginning of the game appealing for her to help Brandon before being confronted and turned to stone by Malcolm. When Brandon takes her the note and explains what happened, Brynn shows a brief alarmed reaction then simply asks to see the note, after reading it she tells Brandon he should read it too, and when questioned muses that Malcolm is going to try and destroy Kyrandia. She also tells Brandon that without the Kyragem it would take all the magic all the Mystics could gather to match Malcolms power.
However despite the odds she is hopeful, reassuring Brandon they are not helpless and asking him to bring her a lavender rose.
After Brandon gives her the Rose she enchants it, and tells him to place the now silver rose on the silver alter in the woods in order to gain the royal amulet, which, in time, will allow him to yield great power in his fight against Malcolm. Brynn also directs him towards Darm in the Timbermist Woods, then wishes Brandon luck and tells him to be careful.
If you return to the temple after gaining the amulet Brynn will be gone. However if you explore much later in the castle, you can find her turned to stone in her old room, making her the second victim of Malcolm. Clicking on her can have Brandon remark that Brynn has always shown kindness towards him.
She is restored at the end along with the other Royal Mystics
Brynn is present in the intro of Legend of Kyrandia 2: Hand of Fate, where she is seen at the conference along with the other Royal Mystics. Brynn is sat at a table reading through a book of records to try and find out why Kyrandia is disappearing and how to stop it. Later she joins in with the other mystics applauding the Hands plan to save Kyrandia.
This game also hints at some degree of hostility, or resentment between her and Zanthia, at least from Zanthia's side as Zanthia makes several unkind and unprovoked comments about Brynn throughout the game.
Brynn is notable by her absence in the third game, being the only Royal Mystic not to appear at all, although Malcolm mentions her at one point.