Ondine

 is a character who appears in Season 2 of Miraculous: Tales of Ladybug & Cat Noir. In "Syren", after Kim ignores her, she is akumatized by Hawk Moth into Syren, a mermaid supervillain.

Physical appearance
Ondine has short red hair, light teal eyes, and freckles.

Civilian attire
TBA

As Syren
As Syren, she has dark pink skin, black freckles on her shoulders and elbows, and a lighter pink face with smaller darker freckles. She has short light red hair, and two silver circular horns sticking out of the top of her head. Her eyes have pinkish-red irises and icy blue sclerae. Her black strapless outfit has a fish-scaly look and a light pink lining. Her feet connect together to make a two-pointed pink fin.

Personality
Ondine is a sweet and fun girl who enjoys playing games and swimming. She has a huge crush on Kim.

As Syren, her love for Kim becomes both very possessive and obsessive, becoming determined to make him her prince. If anyone threatens her relationship with Kim, like Ladybug or Cat Noir, she is easily provoked into attacking them. She is completely ignorant of the effects her actions have on others, never once considering the citizens trapped or hurt because of her flooding of Paris.

As a civilian
Ondine is an excellent swimmer.

As Syren
Syren has the power to control water, her tears causing the pool to overflow until it floods all of Paris and turns it into her own personal domain. She is able to swim incredibly fast and breathe underwater, and is also able to blow bubbles filled with air, allowing others to breathe underwater. She claims a kiss from her will turn Kim into a mermaid just like her, allowing him to breathe and live underwater without a bubble.

Lê Chiến Kim
Ondine is shown to have a romantic interest in Kim in "Syren", but he is oblivious to her feelings, resulting in her being akumatized into Syren, who wishes to make Paris an underwater kingdom for the two of them. She had apparently tried to confess to him many times before, but hasn't been successful. He does realize her feelings for him when she is akumatized, and at the end of the episode, he asks her to go to the movies with him, suggesting he returns her feelings.

Ladybug
As Syren, she despises Ladybug, who tries to set Kim free multiple times. Of course, she prohibits this by attacking Ladybug with brute force.

Trivia

 * Her akumatized form was first revealed in a promotional video for Season 2 from TFOU.
 * Her names were revealed on April 12, 2018 by an article on Radiotimes.com of the UK.
 * Syren will reappear in the two-part special event "The Heroes' Day".
 * Her name and her akumatized form might be a reference to an Undine, a species of water elementals or water nymphs.

Ondine pt-br:Ondine Ондин