Creature of the Rainbow Mantle

The Creature of the Rainbow Mantle lives on Graynor. She makes her first and only appearance in The Power of Harmonix.

Appearance
It looks like a brown horse at first, but when a fairy has proven herself and finds it, it's appearance changes and it turns into a white horse with a long rainbow-colored mane.

Season 5
While Tecna, Musa and Stella searched for the creature, her tracks were seen leading to a bush from which it came out of. When the Trix arrived and attacked the three, they ended up knocking the creature over a cliff. As it was about to fall Bloom, Flora and Aisha arrived just in time to save it and as she observed them she deemed them worthy and revealed herself. She then used her powers to cure the Winx and created a bright light that drove the Trix away, she then followed the Winx back to the Ancestral Spirit of Nature.