Green Ethereal Fairy

The Green Ethereal Fairy is an extremely powerful fairy who lives outside of time and space.

Appearance
She has pale green skin, green hair which is pulled back and styled into an upward hairstyle, solid blue eyes, and pale purple lips. She has long and skinny translucent green wings, and a long transparent veil skirt.

Personality
She is calm but seems to be the more serious one of the three Ethereal Fairies.

Season 4
She alongside the other two Ethereal Fairies, was summoned by Faragonda through a charm and was asked to assist the Winx in their mission on Earth. She is the one who explains what the Gifts of Destiny are to the Winx; they are evolution powers of Believix and thus, strengths their powers. Once the first gift, Sophix had been distributed by the Blue Ethereal Fairy, she states that their duty is complete and will return when the Winx need the other gifts.

True to her word, she appears once the Winx had helped Diana overcome her thirst for vegeance. She is the one to give the girls their second gift, Lovix, the Gift of Heart. This prompts Aisha to ask the purpose of this gift and the Orange Ethereal Fairy simply answers that it will provide them with courage for their next mission. Then she and others teleport away.

Though the gifts were given to them, the Green Ethereal Fairy still wanted to ensure they were worthy of them. She observed their actions and when they chose to set aside their negative feelings to provide protection for the Wizards of the Black Circle (per the Wizards' request), she deemed them worthy. She teleported into Sibylla's Cave to express her approval.

She appears one last time by teleporting into the interdimensional portal the Winx were in, heading home once they had reached an agreement with the Vengeance Fairies and Queen Morgana. The mood is more solemn and serious this time because of the last gift they will be presenting to the girls is the Black Gift. She states that this is a dangerous gift which is further explained by the Orange Ethereal Fairy. The gift is a powerful spell that can bring anything back to life. When the Winx express uncertainty, she clarifies that someone will be in between life and death, and this gift can save them. This is the prophecy, nothing else is said and she teleports away, leaving the Winx confused.

Magical Abilities
The Ethereal Fairies are powerful magical creatures. They are timeless and immortal, existing outside of time. Nabu has stated their magic is archaic and very sweet. They can travel from interdimensinally as seen when they appeared to the Winx when they were traveling through an interdimensional portal from Aurora's Frost Tower to their lounge at Love & Pet. The Ethereal Fairies are the guardians of the Gifts of Destiny. They also know what will happen in the future and can warn the beings they are supposed to help. The Ethereal Fairies were destined to help the Winx defend the Earth from the Wizards of the Black Circle and from the vengeance of the Earth Fairies.

Trivia

 * She is inspired by Lachesis, the Fate of Greek mythology who measures the thread of life allotted to each person with her measuring rod.