Serena has a pale pink-blue skin, blue eyes with cyan eye shadows, rose lips and blue body-tail with flame patterns on it. She wears a blue spiral shell-shaped hat decorated by two dragon horns-like corals. A transparent orange veil attached to the hat. She has a orange flame-shaped symbol on her forehead.
Serena is a nice, sweet and talkative Selkie. She is also very brave and strong willed. According to Bloom, she talks very fast and is the cutest thing ever.
This section lacks information. You can help Winx Club Wiki by expanding it.
Serena makes an appearance of where Omnia was and trying to get away but Tritannus got there in time before she could escape. Herself and the other Selkies were trapped in a stormy barrier, preventing them to not leave it and were cover by something not letting them to speak. Then she tell Omnia that someone is coming which were the Winx. Then herself and the Selkies followed to the Winx where the hidden pearl was and stays outside to warn Omnia if Tritannus escaped with the pearl. Later on the movie, she threw the pearl to one of the Selkies. She was last saw when they danced around in a line then Omnia.