OVA
Description
Marin is a supporting character in the anime and manga series Lil' Red Riding Hood Cha-Cha. She is a mermaid with peach skin, hot-pink colored hair, and dark purplish red eyes, often depicted wearing a light blue hair accessory and a red tube top. Her tail and fins, typical of a mermaid's anatomy, can transform into human legs when they dry out, allowing her to move on land. She attends Urara School alongside the main characters and is a student in the apple class.

Marin's background is that of a mermaid who becomes involved with the main group primarily because of her strong romantic interest in Riiya, the young werewolf boy. Her initial motivation for joining the school and interacting with the others is her infatuation with him, and she will go to considerable lengths to win his affection. This single-minded pursuit defines much of her behavior and drives her actions throughout the story. Her feelings for Riiya are intense and possessive, leading her to view Chacha as a rival and to resent the closeness between Chacha and Riiya. Her personality is characterized as selfish, somewhat violent, and at times sinister. Despite her pretty and charming appearance, she can be manipulative and self-centered in pursuit of her goals, often acting without much consideration for others. She is courted by a sea goblin named Umi Bouzu, but she shows no interest in his affections, remaining focused on Riiya.

In the overall story, Marin initially serves as a rival to Chacha due to their mutual connection to Riiya, often inserting herself into situations to be near him or to try to drive a wedge between him and Chacha. Despite her antagonistic tendencies, she later becomes part of the group that bands together against the main villain, Daimao. She joins forces with Chacha, Riiya, Shiine, Orin, Yakko, Dorothy, and Seravy as one of the eight Holy Warriors of Love, Courage, and Hope to infiltrate Daimao's castle and defeat him. This marks a significant development for her character, as she moves from being a primarily selfish antagonist to an ally who contributes to the larger battle, though her underlying personality traits and her devotion to Riiya remain consistent.

In terms of notable abilities, Marin possesses the inherent traits of a mermaid, which include amphibious adaptation through her tail and fin transformation. Attending a magic school, she is also trained in magic, though her specific magical talents are less emphasized compared to her persistence and her determined pursuit of what she wants. Her key relationships are centered on her obsession with Riiya, her open dislike for Chacha, and her general lack of interest in the sea goblin who pursues her. Through the course of the series, she integrates into the larger group dynamic, but her core personality as a self-interested and forceful individual remains a constant part of her character.