Aisling

Aisling is one of the main characters of the French-Belgian animated film The Secret of Kells based on the illustrated Gospel manuscript The Book of Cells. A fairy-like shapeshifting creature, Aisling is the sole survivor of her kind as it was killed by Crom-Cruach. Harboring fear towards the demon, Aisling finds assistance from the young monk Brendan, aiding on his quest to find the Eye of Colm Cille, a special magnifying lens captured by the demon, eventually sacrificing herself in order for Brendan to finish his mission; to to complete the Book of Cells and turn darkness into light. Since afterwards, she appears as a shape-shift spirit (currently in the form of a wolf), guiding Brendan to his path in Ireland, where the monk carries his mission to finish the book, eventually completing it.

Regarding the villain wars, Aisling appears in the second Heroes vs. Villains as one of the new heroes who clash with the forces of evil.