Arianrod is the daughter of Bress, King of the Fomores, an advanced race which originated on Mars, before moving to Mû, and then to Earth. She became Kabur's companion in his quest to find Lagrid. When the Wan Lords attacked, she was entombed by Baltazar, then resurrected after their defeat. She was then sent to the future (our present) by the Natrix to help Tanka and Golden Boy defeat the forces of the Pentacle, and find what had happened to her people.
Arianrod has all the strength and powers of her race; and is the mistress of a sword which can project fire and ice.
Arianrod is a regular character in Strangers - Season 5.