Fitcy

Fitcy was the Dark curse spirit who possesses the Dark Lord Layla, and later the God Yoshi, and the true main antagonist of Hello yoshi.

The Dark Curse was originally a normal Fairy princess living amongst the people of Fairytopia. After thousand years of neglect, however, he cast away his face, leaving his soul to become filled with hate and envy. After possessing a factory worker, he appears as an arrogant troublemaker responsible for stealing the faces of various People across Fairytopia, giving said faces to monsters.

As a reborn, she is the baby elf fairy princess, reborned by Great sage God Yoshi

In Season 19, she returns as deuteragonist for Hello yoshi and new transfer school girl in Fairytale high, at the mid Ultimate Season, Yoshi and friends transform Fitcy into her true form, the 12 year old girl. And she becomes the Ultimatix fairy.