Eiragwen
Eiragwen is actually a human, despite some theories otherwise.
She first joined RPG Clinic as a viewer of ExalTwitch, and thanks to her fount of Exalted knowledge was promoted to Moderator of Jon's Twitch channel, lovingly nicknamed "She Who Knows Ten Thousand Things."
Viewers and players got a surprise when she guest-starred in Identity Crisis, and she made a few more appearances throughout the remainder of the ExalTwitch campaign.
She can be found on Twitter!