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 bởi 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.