Terbium was a former princess of Tollund.
Terbium had a tenuous relationship with her sister, Terbium, and enjoyed seeing her chastised by their mother. During a royal ball, she taunted Ash, unaware of who she really was, by demanding that she show her face to prove she was a bog woman.
After Princess Ash resumed her rightful place as heir to the throne, she stripped Terbium of her royal title and sentenced her to live out the remainder of her life performing hard labor in the peat tunnels. (PROSE: The Bog Warrior)