Glimmer is a former Neverseen member and a Flasher. In Legacy, she was the one who tied bonds onto Tam's wrists to let the Neverseen control him.
Glimmer tries to make friends with Tam while he is with the Neverseen, but he is determined to ignore her.
At the battle in Loamnore, she breaks Tam's bonds so he can help Sophie and her friends.
Later, after the battle, she's invited to live with Tam and Linh. However, she refuses to tell people her real identity and show her face, keeping herself hidden underneath her cloak.