Pichi Pichi Pitch
Karen is Noel's younger twin sister; however, they both live in different parts of the oceans and have never met. Even so, she cares a great deal about Noel without knowing what Noel is really like. When she is told that Noel was captured द्वारा Gaito from her servants, she vows to find her no matter what. Even though it was not true, Karen believed that Rina abandoned Noel while she was being captured, but Noel was in fact, sacrificing herself to let Rina escape. Due to the misunderstanding, Karen disliked Rina for a long time.
When Karen appears before the other mermaid princesses: Lucia, Hanon and Rina, she saves them from the Water Demons with her extraordinary गाना voice. Delighted that they found another mermaid princess, Lucia asks Karen to शामिल होइए them, but she straight-forwardly refuses.
Karen talks with Rina for another time, and she believes the incident with Noel's kidnapping is a misunderstanding. Even when things were straightened out, Karen still goes out to खोजिए desperately for Noel alone.
After a long time searching for Gaito's castle, she finally finds it moving through the ocean with the other mermaid princesses who were searching for the गढ़, महल as well. However, Karen gets stuck in a black mist and is saved द्वारा the other princesses, while that was going on, Gaito's गढ़, महल disappeared.
Eventually Karen accepts the मत्स्य कन्याओं and joins them to fight against Sara, the Water Demons, Gaito. When they find the kidnapped Noel and Coco, Karen immediately swims as fast as she could to rescue Noel and hugs her, even going as far as calling her 'Onee-sama', a respectful way of calling an older sister. In a way, Karen's main goal to rescue Noel was finally over.
Pure
Karen's finds a प्यार interest, Subaru, and they were shown researching the mysterious temperature raise in the antarctic ocean.
Karen has a pegiun friend name Pipi who help her contact the other princesses to save Luchia and the Legendary glacier.
Karen's additude change in the Pure season. She loosen up a little and become और caring to the other princesses even as helping them with their troubles as shown in episode 16 in Pure.
It shown that Karen has an insterest in समुद्र तट volly ball in episode 16 Pure.
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